Experiment 1 Introduction to Some Laboratory Measurements

 Cordelia Singleton
 8 months ago
 Views:
Transcription
1 Experiment 1 Introduction to Some Laboratory Measurements Introduction In this experiment you will familiarize yourself with the English & metric systems of measurement, weigh with a centigram balance, and study the operation of a laboratory burner. Volume will be measured directly with volumetric devices such as a graduated cylinder and a buret or calculated from dimensions if measuring a regular geometric shape such as a cylinder or rectangular bar. Density is found by dividing mass by volume. In this experiment, the density of water is determined. Procedure Part 1: Metric to English system of measurement using a ruler. Using either a meter stick or a centimeter ruler, measure the length and width of this page to the nearest 0.1 mm. After taking the measurements, convert all lengths to the specified units on the report sheet. Be sure to show all your work for the conversions. Next determine the volumes of test tubes by two different methods. In method one, use the cm ruler to measure inside diameters and lengths of two different test tubes to the appropriate degree of precision. (When measuring the height (h) of the inside of the tube, measure to where you think the curvature begins near the bottom of the tube.) If all your test tubes are the same, borrow one of a different size., Do not include the thickness of the glass in the reading. Now calculate the volume of each test tube using the formula: V = r 2 h keeping in mind = 3.14; r (the radius) = ½ the diameter. Round off your final calculation to the appropriate number of significant figures. Method two, measure the volumes of the same two test tubes, by filling them with water and pouring the water into a 25 or 50 ml graduated cylinder. Read the volume on the cylinder by estimating to the nearest 0.1 ml. What did you observe about the volume determined by the two different methods? Part II: Weighing objects using the balance. Your instructor will explain the operation of the balance you will use in your laboratory work. Weigh a clean dry 100 or 150mL beaker to 2 decimal places using the centigram balance. Fill a 50mL buret with tap water and mount it in a holder on a ring stand. Measure out about 20 ml of tap water into the weighed beaker. Read the initial and final volumes of the buret to the nearest 0.01 ml. Now reweigh the beaker containing the water. Do not spill water on the pan! Record your measurements, both volume and associated weight, in your lab note book with the correct number of significant figures and correct units. Repeat the same steps for a sample of about 25 ml of tap water. It does not matter how much water you use, it ONLY matters that you record the actual volume. Technique Alert! Use the same balance for all your weighings to reduce the chance of systematic error. There is a direct relationship between an object s mass and its volume, called density. Using the formula d=m/v, where m stands for mass measured in grams and V stands for volume measured in milliliters, calculate the density of water for each of your trials. What did you discover? What do you
2 believe would happen if you measured out 15 ml of water, weighed it, and repeated the same calculations? Be sure to show all work for the conversions. Look up the accepted value for the density of water at a room temperature of 20 o C. (You can check the CRC Handbook for the value at 20 o C or use the internet). Report the value to three significant figures. Calculate the % error in your value for the density of water. The general formula for calculating a percent error is: % error = [ experimental value accepted value ] x 100 accepted value Keep the + or sign in the answer. It indicates whether your result is high or low. Part III. Temperature: The Thermometer & the Bunsen Burner. The "Bunsen" burner is commonly used for laboratory heating operations. Now you will learn to use the Bunsen burner. There are several types of burners, differing from each other in details of construction, but each has a gas inlet, gas control knob, a tube for mixing air and gas, and an opening near the base of the tube for introduction of air. Find these parts on your burner and make a neat labeled sketch of the burner. Light the burner by partially closing the air vent and the gas control knob, turning on the gas valve on the bench, and bringing a match in toward the top of the burner from the side, touching the top of the tube. Close the air hole at the base of the tube almost completely. This produces a luminous flame. Take a long copper wire and place the tip of the wire in the luminous flame, take note of your observations in your lab notebook. Next, open the air hole about half way and adjust the flame by adding more gas until the flame is about 8 to 10 cm high and the flame is blue. Take the same copper wire and place it in the blue flame and once again, record your observations in your lab notebook. Lastly, adjust the air intake such that the flame exhibits two blue tones, an inner light blue flame and an outer darker blue flame. Place your copper wire in several areas of the flame and record your observations. Can you confirm that a blue flame is hotter than an orange flame? Now it is time to use the Bunsen burner. Set up a ring stand with a ring clamp & wire gauze. Fill a 250 ml beaker half way with tap water and add two boiling stones. Place the beaker of water on the wire gauze and set up the Bunsen burner next to the ring stand. Measure the initial temperature of the room temperature water to the nearest 0.1 o C. Relight the Bunsen burner. If you are to boil water, which type of flame should you use? Place the lit Bunsen burner under the wire gauze holding the beaker of water. Heat the water to boiling. After 5 minutes of full boiling, measure the temperature of the water. Record that measurement in your lab notebook. Remove the thermometer and wait another 5 minute before remeasuring the temperature of the boiling water. Record that value. Repeat after another 5 minutes have past. Look up the boiling point of water and compare to your own reading. This technique is referred to as calibration of the thermometer. Is your thermometer accurate? The boiling point of any pure substance is characteristic of that material and can be used to identify that substance.
3 Experiment 1 Introduction to Some Laboratory Manipulations Data and Report Show all calculations on this report sheet. Name Part I. A. Length of page: cm mm km in (show calculations in space below) Width of page: cm mm km in (show calculations in space below) Data using the ruler: (show units) Test tube # diameter (d) height (h) volume (cm 3 ) Volume (L) Show the setup of one volume calculation. Data using the graduated cylinder (show units) test tube #1 : volume test tube # 2: volume: What can you conclude about the two different methods for measuring volume? Which method, the measurement of dimensions, or the measurements of volume with a graduated cylinder, do you think gives a better result? Explain why. (recall the assumption about measuring the test tube as a cylindrical object).
4 Part II. Initial buret volume Final buret volume Volume of water Weight of beaker and water Weight of beaker Weight of water Room Temperature of water Density of water (calculated) Density of water from resource book % error in density Show setup of calculations of density and % error for one trial: o C g/ml o C Part III Sketch of burner (Label parts): What color is the flame when the oxygen intake has been minimized? Describe below what you observe when you placed the copper wire in the three different flames. What color is the hottest flame? Use the CRC handbook or other resource material to look up the melting point of copper and record that value here:. What can you conclude about the actual temperature of the hottest flame?
5 Temperature Manipulations Room Temperature of water o C Temperature of boiling water o C o C o C Theoretical temperature of boiling water from handbook Is your thermometer accurate? o C Questions 1. An empty graduated cylinder weighs g. 35 It was filled to the extent shown in this partial segment of a graduated cylinder with a liquid called carbon tetrachloride (CCl 4). The density of CCl 4 is 1.61 g/ml How many grams does the cylinder weigh together with the CCl 4? a) Look at the densities of the elements on the periodic chart given in the Introduction to Measurements resource in the Chem 65 lab materials, (online). What general trend, an increase or decrease in density, do you see as you look from the top to bottom in a given group of elements (that is, along a vertical column, for example Li to Fr)? b) What general trend do you see in the densities of elements on the left half of the periodic table, as you read from left to right in the same row, (or in other words, across a period, for example from K to Cr)? 3. a) What is the densest element? (refer to the density table in the Introduction to Measurements) b) If you have a coin made of this element that weighs g, and has a thickness of 4.00 mm, what would the diameter of the coin be, in cm? (A coin is shaped like a cylinder, so V = r 2 h where h = 4.00 mm) karat gold contains 50% gold and 50% copper. What do you think the density of 12 K gold should be? (Hint, look up the densities of pure copper and pure gold.)
LABORATORY TECHNIQUES. Pouring Liquids
LABORATORY TECHNIQUES Working in the chemistry laboratory you will be handling potentially dangerous substances and performing unfamiliar tasks. This section provides you with a guide to the safe laboratory
More informationExperiment #2. Density and Measurements
Experiment #2. Density and Measurements Goals 1. To measure and record length, volume and mass accurately with the correct number of significant figures 2. To use significant figures correctly in calculations.
More informationLab #1: Introduction to Lab Techniques INTRODUCTION
Name Lab #1: Introduction to Lab Techniques INTRODUCTION Our goals in this experiment are (1) to make some measurements using a metric ruler, (2) to learn how to determine volumes with a graduated cylinder,
More informationThe Ideal Gas Constant
Chem 2115 Experiment # 8 The Ideal Gas Constant OBJECTIVE: This experiment is designed to provide experience in gas handling methods and experimental insight into the relationships between pressure, volume,
More informationCHM 100 / Introductory Laboratory Experiment (r10) 1/11
CHM 100 / 110  Introductory Laboratory Experiment (r10) 1/11 Purpose This introductory exercise will familiarize you with a few of the measurements we make in the chemistry laboratory and the level of
More informationAdditional Reading General, Organic and Biological Chemistry, by Timberlake, chapter 8.
Gas Laws EXPERIMENTAL TASK Determine the mathematical relationship between the volume of a gas sample and its absolute temperature, using experimental data; and to determine the mathematical relationship
More informationBuoyancy and the Density of Liquids (approx. 2 h) (11/24/15)
Buoyancy and the Density of Liquids (approx. 2 h) (11/24/15) Introduction Which weighs more, a pound of lead or a pound of feathers? If your answer to this question is "a pound of lead", then you are confusing
More informationObjective To identify a pure liquid substance using the physical properties of solubility, density, and boiling point.
Chemistry 1020 Identification of an Unknown Liquid Objective To identify a pure liquid substance using the physical properties of solubility, density, and boiling point. Text reference solubility, density,
More informationFigure 1. Example of volume of water required for an unknown sample
Experiment Three Density Procedure Part 1.The density of a solid Obtain a solid unknown sample from your instructor. Write down the number of the unknown in your notebook. Determine the of your unknown
More informationThe Determination of the Value for Molar Volume
Objective The Determination of the Value for Molar Volume Using a chemical reaction that produces a gas, measure the appropriate values to allow a determination of the value for molar volume. Brief Overview
More informationAdaptations of Desert Plants
Adaptations of Desert Plants Topic The shape and surface area of a leaf are related to its ability to gain and release water. Introduction Deserts are biomes that present great difficulties to their inhabitants.
More informationGas Laws. Introduction
Gas Laws Introduction In 1662 Robert Boyle found that, at constant temperature, the pressure of a gas and its volume are inversely proportional such that P x V = constant. This relationship is known as
More informationBoyle s Law VC 09. Experiment 9: Gas Laws. Abstract
Experiment 9: Gas Laws VC 09 Abstract In this laboratory activity, you will experimentally confirm Boyle s Law, determine absolute zero from GayLussac's Law, and determine the molecular weight of acetone,
More informationMEASURING VOLUME & MASS
MEASURING VOLUME & MASS In this laboratory you will have the opportunity to apply your measuring skills in gathering data, processing it, and interpreting the results. For this experiment you will: 1)
More informationDetermination of the GasLaw Constant (R) using CO2
Determination of the GasLaw Constant (R) using CO2 EXPERIMENT 11 Prepared by Edward L. Brown and Miranda Raines, Lee University The student will become familiar with ideal gases and how their properties
More informationInquiry Module 1: Checking the calibration of a micropipette
Inquiry Module 1: Checking the calibration of a micropipette 1. Introduction Larger volumes (1mL and more) are usually measured using pipets or measuring cylinders. Such cylinders and pipets are labelled
More informationThe Decomposition of Potassium Chlorate
The Decomposition of Potassium Chlorate Small quantities of molecular oxygen (O 2 ) can be obtained from the thermal decomposition of certain oxides, peroxides, and salts of oxoacids. Some examples of
More informationCH2250: Techniques in Laboratory Chemistry. Outline Measuring Mass Measuring Volume Significant figures. Mass Measurement
CH2250: Techniques in Laboratory Chemistry Outline Measuring Mass Measuring Volume Significant figures Mass Measurement Mass Measurement Measure mass not weight Mass is measured with a balance (a scale
More informationGas Laws. 2 HCl(aq) + CaCO 3 (s) H 2 O(l) + CO 2 (g) + CaCl 2 (aq) HCl(aq) + NaHCO 3 (s) H 2 O(l) + CO 2 (g) + NaCl(aq)
Gas Laws Introduction: Although we cannot see gases, we can observe their behavior and study their properties. For example, we can watch a balloon filled with helium gas floating in air and conclude that
More informationCH 112 Special Assignment #2 Density Layers and Lava Lamps
CH 112 Special Assignment #2 Density Layers and Lava Lamps PRELAB ASSIGNMENT: Make sure that you read this handout and bring the essentials to lab with you. Here are the prelab questions for this week.
More informationPhysics 1021 Experiment 4. Buoyancy
1 Physics 1021 Buoyancy 2 Buoyancy Apparatus and Setup Materials Force probe 1000 ml beaker Vernier Calipers Plastic cylinder String or paper clips Assorted bars and clamps Water Attach the force probe
More informationSOLUBILITY OF A SOLID IN WATER
1516L Experiment 2 SOLUBILITY OF A SOLID IN WATER Objectives In this experiment you will determine the solubility of potassium nitrate (KNO 3 ) in water at various temperatures. You will prepare a plot
More informationOverview of Density Worksheet
Name Key formulas/concepts: Overview of Density Worksheet Density Density = Mass divided by Volume (D = M/V). The mass of an object is 25 grams. The volume of an object is 5 cm 3. D = 25g/5cm 3 = 5 g/cm
More informationSOLUBILITY OF A SOLID IN WATER
1516L Experiment 1 SOLUBILITY OF A SOLID IN WATER Objectives In this experiment you will determine the solubility of potassium nitrate (KNO 3 ) in water at various temperatures. You will prepare a plot
More information1. Determining Solution Concentration
In this exercise you will determine the concentration of salt solutions by measuring samples with known concentration and making a calibration curve. You will review units of concentration, and how to
More informationPART 3 MODULE 6 GEOMETRY: UNITS OF GEOMETRIC MEASURE
PART 3 MODULE 6 GEOMETRY: UNITS OF GEOMETRIC MEASURE LINEAR MEASURE In geometry, linear measure is the measure of distance. For instance, lengths, heights, and widths of geometric figures are distances,
More informationRead ENTIRE lab up to Disposal Section. MAKE NOTES!!! **For Procedures, Highlight equipment used and circle quantities measured out.
Lab Ch 2 Mass, Volume, & Density Lab Partners: READ Prelab!!! Read ENTIRE lab up to Disposal Section. MAKE NOTES!!! **For Procedures, Highlight equipment used and circle quantities measured out. Density
More informationCalibration of Volumetric Glassware
Calibration of Volumetric Glassware Introduction This set of laboratory experiments is designed to introduce you to some of the apparatus and operations you will be using during the remainder of this course,
More informationExperiment P18: Buoyant Force (Force Sensor)
PASCO scientific Physics Lab Manual: P181 Experiment P18: (Force Sensor) Concept Time SW Interface Macintosh file Windows file Newton's Laws 45 m 300/500/700 P18 P18_BUOY.SWS EQUIPMENT NEEDED CONSUMABLES
More information11.1 Dumas Method  PreLab Questions
11.1 Dumas Method  PreLab Questions Name: Instructor: Date: Section/Group: Show all work for full credit. 1. If a 275mL gas container has pressure of 732.6 mm Hg at 28 C, how many moles of gas are
More informationIn case of emergency or accident: 1. Call the instructor immediately. Describe the nature of the accident or injury.
INTRODUCTION TO SAFETY These guidelines for student safety in the laboratory are excerpted from "Safety in Academic Chemistry Laboratories", published by the American Chemical Society, 1990. To the best
More informationScientific Measurements and Errors: Determination of Density of Glass
Experiment Scientific Measurements and Errors: Determination of Density of Glass II Purposes This experiment has three purposes: 1. Making anumber of measurements, including length, weight, and liquid
More informationINTRODUCTION TO THE SPECTROPHOTOMETER AND PIPETTING SKILLS
INTRODUCTION TO THE SPECTROPHOTOMETER AND PIPETTING SKILLS Section A: Intro to the spectrophotometer A commonly used instrument in the analysis of cellular extracts is the Spectrophotometer. Today you
More informationUNIT 10  GASES. Notes & Worksheets  Honors
Ideal Gas Equation 1 WKSHT 1.) What is the pressure exerted by 2.0 moles of an ideal gas when it occupies a volume of 12.0 L at 373 K? 2.) A flashbulb of volume 2.6 cm 3 contains O 2 gas at a pressure
More informationweight of the book divided by the area of the bottom of the plunger.
Lab: Boyle s Law Datasheet Name Data: Pressure is defined as force per unit area: P = Force/Area When a book rests on top of the plunger, the pressure it exerts equals the weight of the book divided by
More informationACTIVITY: Finding a Formula Experimentally
8.1 Volumes of Cylinders How can you find the volume of a cylinder? 1 ACTIVITY: Finding a Formula Experimentally Work with a partner. a. Find the area of the face of a coin. b. Find the volume of a stack
More informationUsing Darts to Simulate the Distribution of Electrons in a 1s Orbital
NAME: Using Darts to Simulate the Distribution of Electrons in a 1s Orbital Introduction: The quantum theory is based on the mathematical probability of finding an electron in a given three dimensional
More informationExperiment 8 GAS LAWS
Experiment 8 GAS LAWS FV 6/25/2017 MATERIALS: Amontons Law apparatus, Boyle s Law apparatus, Avogadro s Corollary apparatus, four beakers (2 L), warmwater bath, ice, barometer, digital thermometer, air
More informationTHE DECOMPOSITION OF POTASSIUM CHLORATE This lab is derived almost entirely from a lab used at the United States Naval Academy
THE DECOMPOSITION OF POTASSIUM CHLORATE This lab is derived almost entirely from a lab used at the United States Naval Academy PURPOSE: The purpose of this experiment is to study the decomposition of potassium
More informationTarget Density Lab SCIENTIFIC. Density Inquiry Lab Activities. Introduction. Concepts. Materials. Safety Precautions. Preparation
Target Density Lab Density Inquiry Lab Activities SCIENTIFIC Introduction The concept of density is reinforced as students measure the volume and mass of an unknown liquid in a graduated cylinder, graph
More informationARCHIMEDES PRINCIPLE AND THE COMPUTATION OF BUOYANT FORCES. Alexis RodriguezCarlson
ARCHIMEDES PRINCIPLE AND THE COMPUTATION OF BUOYANT FORCES Alexis RodriguezCarlson September 20, 2006 Purpose: The purpose of this experiment is to show that the buoyant force acting on an object submerged
More informationRecording Significant Figures
Recording Significant Figures Having the correct significant figures in your lab reports begins with recording the correct significant figures from the data you obtain in lab. This packet will demonstrate
More informationDetermination of R: The GasLaw Constant
Determination of R: The GasLaw Constant PURPOSE: EXPERIMENT 9 To gain a feeling for how well real gases obey the idealgas law and to determine the idealgaslaw constant R. APPARATUS AND CHEMICALS: KClO
More informationName Date of Data Collection. Class Period Lab Days/Period Teacher. Measuring Lung Capacity
Measuring Lung Capacity Background: The amount of air that you move in and out of your lungs while breathing normally is referred to as TIDAL VOLUME. While it is possible to inhale and exhale more forcefully
More informationHeat Engine. Reading: Appropriate sections for first, second law of thermodynamics, and PV diagrams.
Heat Engine Equipment: Capstone, 2 large glass beakers (one for ice water, the other for boiling water), temperature sensor, pressure sensor, rotary motion sensor, meter stick, calipers, set of weights,
More informationUnit 3. Factor Label (Dimensional Analysis)
Unit 3 Factor Label (Dimensional Analysis) Metric Prefixes Prefix Symbol Meaning Factor Scientific Not kilo k 1000 times larger than the unit 1000 10 3 deci d 10 times smaller than the unit 1/10 101 centi
More informationLab 11 Density and Buoyancy
b Lab 11 Density and uoyancy Physics 211 Lab What You Need To Know: Density Today s lab will introduce you to the concept of density. Density is a measurement of an object s mass per unit volume of space
More informationSee if you can determine what the following magnified photos are. Number your paper to 5.
Challenge 7 See if you can determine what the following magnified photos are. Number your paper to 5. The Answers: EXPERIMENTAL DESIGN Science answers questions with experiments DEFINE THE PROBLEM Begin
More informationVocabulary: Objectives: Materials: For Each Station: (Have 2 stations for each liquid; 8 stations total, in student groups of 34) Students will:
Author: Ms. Adrienne Maribel López Date Created: August 2007 Subject: Properties of Matter Level: 6 th 8 th grade Standards: NYS Learning Standards for Mathematics, Science, and Technology Intermediate
More informationSlide 1 / What is the density of an aluminum block with a mass of 4050 kg and volume of 1.5 m 3?
Slide 1 / 68 1 What is the density of an aluminum block with a mass of 4050 kg and volume of 1.5 m 3? Slide 2 / 68 2 What is the mass of a rectangular shaped ice block with dimensions of 0.04m x 0.05m
More informationPowder Measure. Care & Usage Instructions. Instructions # Product # Revision: A
Powder Measure Care & Usage Instructions Instructions #1048578 Product #909292 Revision: A 1 INFORMATION AND SAFETY INSTRUCTIONS Ammunition reloading can be dangerous if done improperly and should not
More informationPneumatic Reservoir Analysis Work Sheet
Pneumatic Reservoir Analysis Work Sheet Getting Started Use a pair of dial calipers to measure the length and diameter dimensions of the: 1. End Cap 2. Threaded Boss 3. Stainless Steel Tube Record these
More informationSecond Edition Chemistry Experiment Supplies MODULE #1
Second Edition Chemistry Experiment Supplies Those items with "(kit)" next to them are contained the laboratory equipment set that we sell. Those items with "(home)" next to them are considered household
More informationShark Biology Buoyancy by Bill Andrake
Shark Biology Buoyancy by Bill Andrake Science Lesson: Buoyancy  Based on Webisode 45  Shark Biology Grade Level: 68 Time: Four (4550 minute) class periods Introduction Jonathan narrates an educational
More informationKey Terms Chapter 7. boiling boiling point change of state concentration condensation deposition evaporation flow rate fluid freezing point
Foldable Activity Using the instructions on page 267 in your textbook on how to make foldables, write a key term on each front tab, and the definition on the inside (see example that I made up). You will
More informationDensity Determination Kit Instruction Manual
Visit www.balances.com to see the full line of Ohaus Balances Instruction Manual This Kit is compatible with OHAUS Adventurer, Adventurer Pro (except AV5x), Adventurer SL (except AS15x), Pioneer, Explorer
More informationCard 1 Chapter 17. Card 2. Chapter 17
Card 1 Card 2 Liquid A  1.4 g/ml; Liquid B .82 g/ml; Liquid C  1.0 g/ml; one liquid you know. What is it? Also how will they stack? Where will a 1.6 g/ml object end up? Find the density of a 5 milliliter,
More informationTiPure TITANIUM DIOXIDE DETERMINATION OF OIL ABSORPTION (OA) METHOD: T WP
TiPure TITANIUM DIOXIDE DETERMINATION OF OIL ABSORPTION (OA) METHOD: T4400.010.06.WP 1 TITANIUM DIOXIDE (TiPure ) Determination of Oil Absorption I. Principle The oil absorption of a sample of titanium
More informationDensity and Buoyancy Notes
Density and Buoyancy Notes Measuring Mass and Volume 3.1 Density A balance can be used to measure the mass of an object. If the object is a liquid, pour it into a graduated cylinder to measure the volume.
More informationHelicopter C.E.R. Teacher Pages
Helicopter C.E.R. Teacher Pages 45 Minutes Objective Students will conduct an experiment to determine if wing length will affect the descent time of a paper helicopter. Students will analyze their data
More informationThe Discussion of this exercise covers the following points:
Exercise 53 Wet Reference Leg EXERCISE OBJECTIVE Learn to measure the level in a vessel using a wet reference leg. DISCUSSION OUTLINE The Discussion of this exercise covers the following points: Measuring
More information. In an elevator accelerating upward (A) both the elevator accelerating upward (B) the first is equations are valid
IIT JEE Achiever 2014 Ist Year Physics2: Worksheet1 Date: 20140626 Hydrostatics 1. A liquid can easily change its shape but a solid cannot because (A) the density of a liquid is smaller than that of
More informationPRESSURETEMPERATURE RELATIONSHIP IN GASES
PRESSURETEMPERATURE RELATIONSHIP IN GASES LAB PS2.PALM INTRODUCTION Gases are made up of molecules that are in constant motion and exert pressure when they collide with the walls of their container. The
More informationAcceleration: Galileo s Inclined Plane
Teacher s Notes Main Topic Subtopic Learning Level Technology Level Activity Type Motion Acceleration High Low Student Description: Use a water clock to measure a ball s acceleration as it rolls down an
More informationBehavior of the Simple Pendulum
6.271 SCIENCE EXPERIMENTS ON FILE Revised Edition Behavior of the Simple Pendulum Carl C. Duzen Topic The behavior of the simple pendulum Time 15 minutes for preparation, 40 minutes to completion! Safety
More informationConverting Between Measurement Systems. ESSENTIAL QUESTION How can you use ratios and proportions to convert measurements? 7.4.E
LESSON 3.1 Converting Between Measurement Systems Proportionality 7.4.E Convert between measurement systems, including the use of proportions and the use of unit rates. Also 7.4.D? ESSENTIAL QUESTION How
More informationPage 1
Contents: 1. Thrust and Pressure 2. Pressure in Fluids 3. Buoyancy 4. Why objects sink or Float when placed on surface of water? 5. Archimedes Principle 6. Relative Density Learning Objectives: The students
More informationTIME MEASUREMENT. A 90 minutes B 180 minutes C 2 hours 30 minutes D 3 hours. + 2 hours +45 min. +15 min.
TIME MEASUREMENT Eample: The McMillians are going to visit their grandparents. They leave their home at a quarter after eleven in the morning. They arrive at their grandparents fifteen minutes after two
More informationExperiment. THE RELATIONSHIP BETWEEN VOLUME AND TEMPERATURE, i.e.,charles Law. By Dale A. Hammond, PhD, Brigham Young University Hawaii
Experiment THE RELATIONSHIP BETWEEN VOLUME AND TEMPERATURE, i.e.,charles Law By Dale A. Hammond, PhD, Brigham Young University Hawaii The objectives of this experiment are to... LEARNING OBJECTIVES introduce
More informationDetermination of the Percentage Oxygen in Air
CHEM 121L General Chemistry Laboratory Revision 1.2 Determination of the Percentage Oxygen in Air In this laboratory exercise we will determine the percentage by volume of Oxygen in Air. We will do this
More informationRoy G. Biv Charles W. McLaughlin
SCIENCE EXPERIMENTS ON FILE Revised Edition 6.251 Roy G. Biv Charles W. McLaughlin Topic Relationship between wavelength and frequency of light Time 1 hour! Safety Please click on the safety icon to view
More informationI. Introduction. Lesson title: How does pressure effect a scuba diver at different depths?
I. Introduction Lesson title: How does pressure effect a scuba diver at different depths? Grade level audience: Regents Chemistry 11th Grade Lesson overview: Students have been introduced to the definition
More informationPHYS 101 Previous Exam Problems
PHYS 101 Previous Exam Problems CHAPTER 14 Fluids Fluids at rest pressure vs. depth Pascal s principle Archimedes s principle Buoynat forces Fluids in motion: Continuity & Bernoulli equations 1. How deep
More informationAPBiology Unit 2, Chapter 8
APBiology Unit 2, Chapter 8 Research Question What factors affect the rate of cellular respiration in multicellular organisms? Background Living systems require free energy and matter to maintain order,
More information2. investigate the effect of solute concentration on water potential as it relates to living plant tissues.
In this lab you will: 1. investigate the processes of diffusion and osmosis in a model membrane system, and 2. investigate the effect of solute concentration on water potential as it relates to living
More informationAD1653 DENSITY DETERMINATION KIT. Applicable analytical balance models BM series GH series HRi series GR series HR series HA series 1WMPD B
This document hosted by: www.oldwillknottscales.com AD1653 DENSITY DETERMINATION KIT Applicable analytical balance models BM series GH series HRi series GR series HR series HA series 1WMPD4000728B 2012
More informationa) When measuring the hallway or class, did you have any systematic errors? b) Estimate the size of your random errors using each technique.
Chapter 1 Driving the Roads An error that cannot be corrected by calculation is called a random error. No measurement is perfect. When you measure something, you make an approximation close to a certain
More informationMeasuring Lung Capacity
Name Class Date Chapter 37 Circulatory and Respiratory Systems Measuring Lung Capacity Introduction The amount of air that you move in and out of your lungs depends on how quickly you are breathing. The
More informationPerimeter. Name. 22 Topic 17. Reteaching Find the perimeter of the figure below.
Perimeter Reteaching 11 Find the perimeter of the figure below. 15 m x 4 ft 4 ft 2 ft y 2 ft 5 ft 6 m 20 ft Reteaching 11 By using a formula: There are two equal lengths and equal widths, so you can
More informationSpace Dust. Part A: 1 hour Part B: 10 minutes on day 1, 20 minutes on each of several subsequent days
Space Dust Topic Investigating micrometeorites Introduction The media carry stories about meteorites coming toward the Earth, but the Earth is actually being constantly bombarded with dust and dirt otherwise
More informationDeep Water Currents Lab
Deep Water Currents Lab Background: Anyone visiting the seashore is struck by the constant motion of water traveling on the surface of the ocean in the form of waves. But beneath the ocean's surface, water
More informationMaking a Barometer and Using It
SCIENCE EXPERIMENTS ON FILE Revised Edition 2.51 Making a Barometer and Using It Topic Air pressure Time Varies! Safety Please click on the safety icon to view safety precautions. Materials large (1gal)
More informationEQ: GMD.1 What is Cavalieri's Principle?
EQ: GMD.1 What is Cavalieri's Principle? Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Essential Question Week 14, Lesson 1 1. Warm Up
More informationBOYLE S / CHARLES LAW APPARATUS  1m long
BOYLE S / CHARLES LAW APPARATUS  1m long Cat: MF0340101 (combination Boyle s and Charles without mercury) DESCRIPTION: The IEC Boyle's & Charles Law apparatus is a high quality instrument designed to
More informationExercise 52. Bubblers EXERCISE OBJECTIVE DISCUSSION OUTLINE. Bubblers DISCUSSION. Learn to measure the level in a vessel using a bubbler.
Exercise 52 Bubblers EXERCISE OBJECTIVE Learn to measure the level in a vessel using a bubbler. DISCUSSION OUTLINE The Discussion of this exercise covers the following points: Bubblers How to measure
More informationTranspiration. DataQuest OBJECTIVES MATERIALS
Transpiration DataQuest 13 Water is transported in plants, from the roots to the leaves, following a decreasing water potential gradient. Transpiration, or loss of water from the leaves, helps to create
More informationGRADE 6: Materials 1. UNIT 6M.1 7 hours. Solubility. Resources. About this unit. Previous learning. Expectations. Key vocabulary and technical terms
GRADE 6: Materials 1 Solubility UNIT 6M.1 7 hours About this unit This is the first of four units on materials in Grade 6. This unit builds on the study of the properties of water in Unit 5M.1. Unit 7M.1
More informationChapter Pipette service & maintenance. Pipette specifications according to ISO Repair in the lab or return for service?
Pipette specifications according to ISO 8655 Chapter 5 5.1 The ISO 8655 standard gives the accuracy and precision limits as both absolute and relative values. Specifications will depend on the technique
More informationaboratory Measurements, Equipment, and Safety
aboratory Measurements, Equipment, and Safety Section 1.2 Laboratory Equipment _ ost of the time, conducting scientific experiments requires the use of one or more types of equipment. The following is
More informationTHE GAS STATE. Unit 4. CHAPTER KEY TERMS HOME WORK 9.1 Kinetic Molecular Theory States of Matter Solid, Liquid, gas.
Unit 4 THE GAS STATE CHAPTER KEY TERMS HOME WORK 9. Kinetic Molecular Theory States of Matter Solid, Liquid, gas Page 4 # to 4 9. Boyles Law P α /V PV = Constant P V = P V Pressure Atmospheric Pressure
More information2. Pressure Conversions (Add to your Conversion Sheet
The Gas Law Reference Sheet 1. The Kelvin Temperature Scale Degrees Kelvin = C + 273 Convert to K 1) 27 C 2) 0. C 3) 48 C 4) 16 C 5) 106 C 2. Pressure Conversions (Add to your Conversion Sheet 1 mm Hg
More informationTopic Seismographs measure the intensity of earthquakes.
Earthquake Intensity Topic Seismographs measure the intensity of earthquakes. Introduction Scientists have been rating the intensity of earthquakes since the late 1700s. The instruments that measure earthquake
More informationTEMPERATURE S RELATIONSHIP TO GAS & VAPOR PRESSURE
TEMPERATURE S RELATIONSHIP TO GAS & VAPOR PRESSURE Adapted from "Chemistry with Computers" Vernier Software, Portland OR, 1997 ELECTRONIC LABORATORY NOTEBOOK (ELN) INSTRUCTIONS Read the directions and
More informationUNIT PLAN. Grade Level: 3 Unit #: 42 Measurement: Length, Volume, Mass, & Equivalencies
UNIT PLAN Grade Level: 3 Unit #: 42 Unit Name Measurement: Length, Volume, Mass, & Equivalencies Big Idea/Theme: Measurement is used to effectively communicate a common language of numerical information.
More informationChapter 13 Gases. H. Cannon, C. Clapper and T. Guillot Klein High School. Pressure/Temperature Conversions
Chapter 13 Gases Pressure/Temperature Conversions Convert the following: 1. 3.50 atm = kpa 2. 123 atm = mmhg 3. 970.0 mmhg = torr 4. 870.0 torr = kpa 5. 250.0 kpa = atm 6. 205.0 mmhg = kpa 7. 12.4 atm
More informationAerobic Respiration. Evaluation copy
Aerobic Respiration Computer 17 Aerobic cellular respiration is the process of converting the chemical energy of organic molecules into a form immediately usable by organisms. Glucose may be oxidized completely
More informationName Period Date. Lab 5: The Molar Volume of a Gas
Name Period Date Lab 5: The Molar Volume of a Gas Objective: To determine the actual molar volume of oxyen as To determine an experimental value for the universal as constant Introduction To calculate
More informationPredicted Dispense Volume vs. Gravimetric Measurement for the MICROLAB 600. November 2010
Predicted Dispense Volume vs. Gravimetric Measurement for the MICROLAB 600 November 2010 Table of Contents ``Abstract...3 ``Introduction...4 ``Methods & Results...6 ``Data Analysis...9 ``Conclusion...12
More informationStudents measure the change in pressure by varying the volume of trapped air in a syringe while:
How Does a Trapped Gas Behave? Teacher Information Objective Students investigate the effect of changes in the volume of a confined gas on pressure at constant temperature. Using the pressure sensor, students
More informationD. De La Matter 2004 Swimming Pool Chemistry STUDENT ACTIVITIES:
D. De La Matter 2004 Swimming Pool Chemistry STUDENT ACTIVITIES: Good News! Flinn Scientific Inc. has developed a classroom kit of experiments based on these activities. The Kit Catalog # is AP6599. Ordering
More information