# Section 3 - Measurements, Scales, and Conversions 1 of 8

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Section 3 - Measurements, Scales, and Conversions 1 of 8 Read the following notes on recording measurements, choosing the correct scale, and converting measurements. It may help to underline, highlight, or make notes in the margin of this document as you study. Answer the questions to follow. In the world of science, we use the metric system to record measurements of solids, liquids, and gases. The metric system is easy to follow, mainly because it uses units with divisions that are powers of ten. Using the same system worldwide ensures that any scientist in the world can repeat the experiment of another easily, without less room for error when converting units. The metric system is often abbreviated using the letters SI, which stands for System International (derived from the French). In the metric system, we use the following base units: Mass is measured in GRAMS, using a triple beam balance or scale. Volume is measured in LITERS, using a graduated cylinder for liquids. Distance is measured in METERS, using a ruler or meter stick. Temperature is measured in degrees CELSIUS, using a thermometer. Measuring Mass with a Triple-Beam Balance A triple-beam balance has a pan and three beams with sliding masses called riders. At one end of the beams is a pointer that indicates whether the mass on the pan is equal to the masses shown on the beam. To use: 1. Make sure the balance is zeroed before measuring the mass of an object. The balance is zeroed if the pointer is at zero when nothing is on the pan and the riders are at their zero points. 2. Place the object to be measured on the pan. 3. Move the riders one notch at a time away from the pan. Begin with the largest rider (usually 100 g). If moving the rider one notch brings the pointer below zero, begin measuring the mass with the next smallest rider. 4. Change the positions of there ideas until they balance the mass on the pan and the pointer is at zero. Then add the readings from the three beams to determine the mass of the object. For example, the image above shows masses of 20g, 0g, and 7.70g, giving a total mass of 27.70g.

2 Section 3 - Measurements, Scales, and Conversions 2 of 8 Tips: 1. When using a weighing boat or weighing paper, be sure to zero the balance after you ve placed the boat or paper on the pan and before your add your substance to the boat or paper. 2. Remember that the riders may not be in order by mass. For example, the image on the previous page shows mass increments of 10g on the top beam, 100g on the middle beam, and 1g on the bottom beam. 3. Some balances may have more than three beams. 4. We can only estimate the last digit of the measurement, unless it appears to be exact. For example, the measurement g gives 45.6 grams with certainty, with 0.02 g estimated by the reader. Measuring Volume using a Graduated Cylinder To use: 1. Be sure to have your eyes at the level of the surface of the liquid when reading the scale on the graduated cylinder. 2. The surface of most liquids will be curved slightly down when they are held in a graduated cylinder. This curve is called the meniscus. Read the volume of the liquid at the bottom of the meniscus, as shown. 3. The volume will often be between two lines on the graduated cylinder. You should estimate the final digit in your measurement. For example, if the bottom of the meniscus appears to be exactly half way between the marks for 96 ml and 97 ml, you would read a volume of 96.5 ml. 4. To find the volume of a small solid object, record the volume of some water in a graduated cylinder. Then, measure the volume of the water after you add the object to the cylinder. The volume of the object is the difference between the first and second measurements. This is called the water displacement method. Tip: Do not use a beaker to measure the volume of a liquid. Beakers are used for holding and pouring liquids. To avoid overflow, be sure to use a beaker that holds roughly twice as much liquid as you need. Measuring Temperature using a Thermometer The thermometers you will be using measure temperature in degrees Celsius ( C). Each division on the scale represents 1 C. The average human body temperature is 37 C. A typical room temperature is between 20 C and 25 C. The freezing point of water is 0 C and the boiling point of water is 100 C. Electronic thermometers, often called temperature probes, are used to record temperature over a range of time or to give more accurate and precise readings.

3 Section 3 - Measurements, Scales, and Conversions 3 of 8 To use: 1. Place the thermometer in your sample and wait for 30 seconds before taking the reading. 2. Be sure to have your eyes at the level of the surface of the liquid when reading the scale. 3. The temperature will often fall between two lines on the thermometer. You should estimate the final digit in your measurement. 4. Do not touch the sides or bottom of your container with the thermometer. This can yield a false temperature. For example, the thermometer at right shows a measurement between 55 C and 60 C. We could estimate the reading to be 57 C. Measuring Length using a Ruler or Meterstick Use a metric ruler or meterstick to measure the length of an object. On the ruler, each marked number represents one centimeter (cm). The smaller lines between each centimeter represent millimeters (mm). There are 10 mm in one centimeter and 100 cm in one meter (m). To use: 1. Place the metric ruler so that the 0-cm mark lines up with the end of the object. 2. Be sure to have your eyes at the level of the object when reading the scale on the ruler. 3. You may only estimate the final digit of your measurement. Accuracy, Precision, and Error Accuracy refers to how close a measurement is to the real value or the accepted value. Precision refers to how close a series of measurements are to one another, or to what degree a measurement can be recorded. Accuracy is generally affected by the user s setup and technique when recording measurements. For example, failing to zero a triple-beam balance, or failing to record temperature or volume at eye level would all yield inaccurate measurements.

4 Section 3 - Measurements, Scales, and Conversions 4 of 8 Precision is generally affected by the degree to which a tool can measure. For example, a ruler that measures to the nearest centimeter is less precise than a ruler that measures to the nearest millimeter. In addition, precision is decreased when multiple measurements yield different results. Some examples: Suppose you were to weigh yourself using a scale that is not zeroed. You weigh yourself 10 times, and each time, you record your weight as 65 kg. Though your measurements are precise, they are inaccurate because the scale was not zeroed first. The same would happen if we were to consistently measure a graduated cylinder 20 above eye level, rather than at eye level, or if we used a ruler but did not line up the object at the zero mark. These situations both display user error or poor technique - the reader is not using the tool accurately. In contrast, suppose you were to measure the mass an object using a triple-beam balance. Each time, you zero the balance before recording the measurement. However, your five measurements have masses of 25.5 g, 25.7 g, 24.9 g, 25.5 g, and 25.3 g. The known mass of the object is 25.5 grams. In this example, because the results you obtained are not consistent, you could describe your process and measurements as fairly accurate, but they are not precise. Oftentimes, if a measurement is inaccurate, it s because of user or operator error (poor technique by the scientist). If a measurement is not precise, it is often because of a limitation on the tool s part (it doesn t measure to a greater decimal place, or it doesn t provide consistent results). Volume Volume is the amount of space contained in an object. We can find the volume of box shapes by using the formula volume = length x width x height. Density Density is the amount of matter (mass) compared to the amount of space (volume) an object has. Density can be calculated using the formula density = mass/volume. Since the unit for mass is grams, and the unit for volume is ml or cm 3, then the unit for density is often g/ml, or g/cm 3. Water has a density equal to 1g/mL. Objects with a density less than 1g/mL will float on top of water. Objects with a density greater than 1g/mL will sink in water.

5 Section 3 - Measurements, Scales, and Conversions 5 of 8 Prefixes When recording measurements, we can use the following prefixes, which represent the numbers (or place holders) below: Prefix Abbreviati on Power of Ten Factor of Base Unit Giga G ,000,000,000 Mega M ,000,000 Kilo k ,000 Hecto h Deka da BASE m, g, or L Deci d Centi c Milli m Micro µ ,001 Nano n ,000,001 Pico p ,000,000,001 For example, 1 km is equal to 1000 m, and 15 dg are equal to 1.5 centigrams. When converting one prefix to another, it is helpful to remember the six primary prefixes with the following pneumonic phrase: King Henry died by drinking chocolate milk. for the prefixes kilo- hecto- deka- base deci- centi- milli- Unit Conversions Sometimes it is beneficial to use one particular prefix over another. In these cases, a unit conversion may be required. Using SI units and prefixes, one unit can easily be converted to another. The easiest way to do this is to move the same number of decimal places to the right or left. For example, suppose you are asked to record 1540 m in km. Using the list above, you see that beginning with your base unit (meters), kilo- is located 3 spaces to the left. In your initial measurement, 1540, it is implied that the decimal place exists after the zero (1540.). Since kilois 3 moves to the left, we simply move the decimal place 3 spaces to the left, giving us km.

6 Section 3 - Measurements, Scales, and Conversions 6 of 8 Another way to look at this is to remember that kilo- represents To convert 1540 m to km, we must remember that there are 1000 m in 1 km. Thus, 1540 m x 1 km = km or 1540 m / 1000 = km 1000 m Answer the following questions on a separate sheet of paper. Remember to use the following formatting: - If typed, use size 12 Times New Roman font and single spacing. - If handwritten, print your responses neatly. - Leave one line of blank space between each response. - Use the following heading in the top left corner of your response sheet: Student Name Pre-AP Biology Summer Assignment, Section # Date of completion (not the due date) Section 3, Part I Review Questions: You do not have to use complete sentences. 1. Which base units would you use to record the following measurements? a. the volume of a swimming pool c. the temperature on a sunny day b. the mass of your dog d. the length of a paper clip 2. Identify the following masses shown on the balances. Be sure to include the appropriate units of measure. a. b. c.

7 Section 3 - Measurements, Scales, and Conversions 7 of 8 3. Identify the following volumes shown on the graduated cylinders. Be sure to include the appropriate units of measure. a. b. c. 4. Identify the following temperatures shown on the thermometers. Be sure to include the appropriate units of measure. a. b. c. 5. Identify the following lengths shown on the rulers. Be sure to include the appropriate units of measure. a. b.

8 Section 3 - Measurements, Scales, and Conversions 8 of 8 Section 3, Part II Review Questions: Use complete sentences for # Describe the difference between accuracy and precision. 2. Provide a situation in which a measurement may be accurate, but is not precise. 3. Provide a situation in which a measurement may be precise, but is not accurate. 4. What should we look for to be certain a measurement is both accurate and precise? 5. Convert 110 cm to dm. 6. Convert 4567 g to kg. 7. Convert L to ml. 8. Convert hg to kg. 9. Convert 8.47 hl to dal. 10.Convert g to cg. There will be a quiz on measurements and conversions during the first week of school. You will also be asked to practice and demonstrate proper use of the measuring tools described in this packet.

### Metric Measurements Per Due Date

Forensics Lab Activity Metric Measurements Name Per Due Date Introduction In many scientific investigations, Forensics included, precise measurements must be made before observations can be interpreted.

### METRIC SYSTEM CONVERSION FACTORS

METRIC SYSTEM CONVERSION FACTORS LENGTH 1 m = 1 cm 1 m = 39.37 in 2.54 cm = 1 in 1 m = 1 mm 1 m = 1.9 yd 1 km =.621 mi 1 cm = 1 mm 1 cm =.394 in 3 ft = 1 yd 1 km = 1 m 1 cm =.328 ft 1 ft = 3.48 cm 6 1

### EXERCISE # 1.Metric Measurement & Scientific Notation

EXERCISE # 1.Metric Measurement & Scientific Notation Student Learning Outcomes At the completion of this exercise, students will be able to learn: 1. How to use scientific notation 2. Discuss the importance

### Measurement. Mrs. Messina 6th grade Science

Measurement Mrs. Messina 6th grade Science The Metric System The metric system is almost always used in scientific measurement. The Metric System is a DECIMAL based system. The Metric System is based on

### Metric Conversions Ladder Method. T. Trimpe 2008

Metric Conversions Ladder Method T. Trimpe 2008 http://sciencespot.net/ KILO 1000 Units 1 2 HECTO 100 Units Ladder Method DEKA 10 Units 3 Meters Liters Grams DECI 0.1 Unit CENTI 0.01 Unit MILLI 0.001 Unit

### Laboratory Manual for General Biology I (BSC 1010C) Lake-Sumter State College Science Department Leesburg

Laboratory Manual for General Biology I (BSC 1010C) Lake-Sumter State College Science Department Leesburg Table of Contents Note to Students... 3 Exercise 1 - Measurements and Lab Techniques... 4 Exercise

### EXPERIMENT 1 Measurements

EXPERIMENT 1 Measurements INTRODUCTION In all sciences, measurements are essential. The most fundamental properties that can be measured are length, mass, and time. In chemistry, temperature is also treated

### Metric Mania Conversion Practice. Basic Unit. Overhead Copy. Kilo - 1000 units. Hecto - 100 units. Deka - 10 units. Deci - 0.

Metric Mania Conversion Practice Overhead Copy Kilo - 1000 Hecto - 100 Deka - 10 To convert to a larger unit, move decimal point to the left or divide. Basic Unit Deci - 0.1 To convert to a smaller unit,

### READING MEASURING DEVICES NOTES Here are a couple of examples of graduated cylinders:

READING MEASURING DEVICES NOTES Here are a couple of examples of graduated cylinders: An important part of Chemistry is measurement. It is very important that you read the measuring devices we use in lab

### Experiment 2 Measurements

Experiment 2 Measurements It is necessary in science to quantify any hypothesis or theory, that is, anyone should be able to reproduce anywhere and at anytime an experiment which supports that theory.

### AP Lab 1 - Measurement, Units, and Significant Figures

AP Lab 1 - Measurement, Units, and Significant Figures Purpose: To understand the principles of metric measurement. To become familiar with laboratory equipment used to measure length, mass, and volume.

### Section 1.6 Systems of Measurement

Systems of Measurement Measuring Systems of numeration alone do not provide enough information to describe all the physical characteristics of objects. With numerals, we can write down how many fish we

### How do scientists measure things?

Scientific Methods Lesson How do scientists measure things? KEY TERMS mass: amount of matter in an object weight: measure of the pull of gravity on an object length: distance between two points area: measure

### Pre-Lab 1: Measurement and Density

Pre-Lab 1: Measurement and Density Name: Section: Answer the following questions after reading the background information on the next page. Be sure to use the correct number of significant figures in each

### CHM 130LL: Introduction to the Metric System

CHM 130LL: Introduction to the Metric System In this experiment you will: Determine the volume of a drop of water using a graduated cylinder Determine the volume of an object by measuring its dimensions

### 2. Length, Area, and Volume

Name Date Class TEACHING RESOURCES BASIC SKILLS 2. In 1960, the scientific community decided to adopt a common system of measurement so communication among scientists would be easier. The system they agreed

### Biological Principles Lab: Scientific Measurements

Biological Principles Lab: Scientific Measurements Name: PURPOSE To become familiar with the reference units and prefixes in the metric system. To become familiar with some common laboratory equipment.

### Measurement & Lab Equipment

Measurement & Lab Equipment Materials: Per Lab Bench (For the following materials, one of each per bench, except for rulers.) Thermometers 6 Metric Rulers - 6 or 12 School Rulers 12 Digital Balance - 6

### HFCC Math Lab General Math Topics -1. Metric System: Shortcut Conversions of Units within the Metric System

HFCC Math Lab General Math Topics - Metric System: Shortcut Conversions of Units within the Metric System In this handout, we will work with three basic units of measure in the metric system: meter: gram:

### Scientific Measurements

Scientific Measurements Making measurements is common in general, such as taking our temperature, checking the tire pressure on a car, or measuring the ingredients when cooking. Taking measurements is

### Unit 3.3 Metric System (System International)

Unit 3.3 Metric System (System International) How long is a yard? It depends on whom you ask and when you asked the question. Today we have a standard definition of the yard, which you can see marked on

### Sample Questions Chapter 2. Stoker

Sample Questions Chapter 2. Stoker 1. The mathematical meaning associated with the metric system prefixes centi, milli, and micro is, respectively, A) 2, 4, and 6. B) 2, 3, and 6. C) 3, 6, and 9. D) 3,

### The Importance of MEASUREMENT

Scientists use many skills as they investigate the world around them. They make observations by gathering information with their senses. Some observations are simple. For example, a simple observation

### Lab Activity: Measuring with Metric. Introduction: Standard Metric Units. Names

Names Date Period Introduction: The purpose of this activity is to practice using the metric system. To conduct a scientific investigation, a researcher must be able to make accurate measurements. In today

### MEASUREMENTS, CONVERSIONS, AND MANIPULATIONS

NAME PARTNER(S) SECTION DATE MEASUREMENTS, CONVERSIONS, AND MANIPULATIONS PRE-LAB QUERIES 1. What is the meaning of "measurement"? What are you finding out when you measure something? 2. How could you

### Activity Standard and Metric Measuring

Activity 1.3.2 Standard and Metric Measuring Introduction Measurements are seen and used every day. You have probably worked with measurements at home and at school. Measurements can be seen in the form

### Metric Units. The Metric system is so simple! It is based on the number 10!

Metric Units Name The Metric system is so simple! It is based on the number 10! Below is a diagram of a section of a ruler Each numbered line represents one centimeter Each small line represents one tenth

### The Metric System, Measurements, and Scientific Inquiry (Chapter 23)

GEOLOGY 306 Laboratory Instructor: TERRY J. BOROUGHS NAME: The Metric System, Measurements, and Scientific Inquiry (Chapter 23) For this assignment you will require: a calculator & a metric ruler. Objectives:

### 10 g 5 g? 10 g 5 g. 10 g 5 g. scale

The International System of Units, or the SI Units Vs. Honors Chem 1 LENGTH In the SI, the base unit of length is the Meter. Prefixes identify additional units of length, based on the meter. Smaller than

### Scientific Notation: Significant Figures:

Honors Chemistry Riverside STEM Academy Mrs. Hampton All of the material from Chapter 3 of our text book, Prentice Hall Chemistry, has been covered in our 8 th grade science course. Please review this

### Conversions in the Metric System

The metric system is a system of measuring. It is used for three basic units of measure: metres (m), litres (L) and grams (g). Measure of Example Litres (L) Volume 1 L of juice Basic Units Grams (g) Mass

### Metric Conversion: Stair-Step Method

ntroduction to Conceptual Physics Metric Conversion: Stair-Step Method Kilo- 1000 Hecto- 100 Deka- 10 Base Unit grams liters meters The Metric System of measurement is based on multiples of 10. Prefixes

### Mass and Volume Relationships

Mass and Volume Relationships Objective: The purpose of this laboratory exercise is to become familiar with some of the basic relationships and units used by scientists. In this experiment you will perform

### UNIT II: MATHEMATICS in CHEMISTRY Earland

Quantitative analysis used in Chemistry is not difficult, but it requires you to be able to toggle between different units and be accurate in your calculation. In other words, you must become extremely

### Physical Science Chapter 1 The Metric System

1 Physical Science Chapter 1 The Metric System A. What is Physical Science? 1.Physical Science is the study of matter and energy. a.matter Anything that has mass, takes up space and has inertia. 2 1.Inertia,

### The Metric System was created so that people around the world could talk about measurement using the same standard system.

The Metric System The Metric System was created so that people around the world could talk about measurement using the same standard system. The Metric System is sometimes called the SI System. SI refers

### Chapter 2 Measurement and Problem Solving

Introductory Chemistry, 3 rd Edition Nivaldo Tro Measurement and Problem Solving Graph of global Temperature rise in 20 th Century. Cover page Opposite page 11. Roy Kennedy Massachusetts Bay Community

### 3.2 Units of Measurement > Chapter 3 Scientific Measurement. 3.2 Units of Measurement. 3.1 Using and Expressing Measurements

Chapter 3 Scientific Measurement 3.1 Using and Expressing Measurements 3.2 Units of Measurement 3.3 Solving Conversion Problems 1 Copyright Pearson Education, Inc., or its affiliates. All Rights Reserved.

### CH 2: SCIENTIFIC MEASUREMENT. Chemistry is a lot of math!

CH 2: SCIENTIFIC MEASUREMENT Chemistry is a lot of math! WARM UP 1.Name 3 tools used for measurement. 2.What is a unit? 3.Give an example of a unit. 4.Why are units important. CH 2 SCIENTIFIC MEASUREMENT

### The Metric System. J. Montvilo

The Metric System J. Montvilo 1 Measuring Systems There are two major measuring systems in use: The English System and The Metric System Which do you prefer and why? 2 Measuring Systems Assuming you prefer

### Name: Date: CRN: Scientific Units of Measurement & Conversion Worksheet

Name: Date: CRN: Scientific Units of Measurement & Conversion Worksheet Principle or Rationale: Scientific measurements are made and reported using the metric system and conversion between different units

### Chapter 3: The Metric System. Metric System Basic Units

: The Metric System The English system was used primarily in the British Empire and wasn t very standardized. The French organized a committee to devise a universal measuring system. After about 10 years,

### INTRODUCTION TO MEASUREMENTS

INTRODUCTION TO MEASUREMENTS Introduction: In the first three experiments you will learn how to use equipment that to measure length, mass, and volume. You will apply the rules about significant figures

### Name: Date: CRN: Bio 210A Scientific Units of Measurement & Conversion Worksheet

Name: Date: CRN: Bio 210A Scientific Units of Measurement & Conversion Worksheet Principle or Rationale: Scientific measurements are made and reported using the metric system and conversion between different

### 4.5.1 The Metric System

4.5.1 The Metric System Learning Objective(s) 1 Describe the general relationship between the U.S. customary units and metric units of length, weight/mass, and volume. 2 Define the metric prefixes and

### A. The Metric System (this section can be completed before or during lab)

Lab I: INTRODUCTION TO MEASURING TECHNIQUES The basis for obtaining scientific knowledge is systematic observation and experimentation. A key component of most scientific investigations is measurement.

### The metric system, science, and you!

The metric system, science, and you! In science class, we will be using the Metric System. The metric system is a system of measurement that is used by scientists all over the world. The metric system

### Scientific Measurement Video Notes

Scientific Measurement Video Notes In this lesson you will Define length, mass, volume, time and temperature Name the SI unit for each and an instrument use to measure each Make measurements using the

### Unit 1 Lab Safety, Measurement, Density, Buoyancy and Controlled Experiment

Unit 1 Lab Safety, Measurement, Density, Buoyancy and Controlled Experiment NYS Standards: MST Standard #1 MST Standard #4 3.1h Density can be described as the amount of matter that is in a given amount

### UNIT 2. Measurement. Mrs. Clark and Mr. Boylan

UNIT 2 Measurement Mrs. Clark and Mr. Boylan Unit 2 Measurement 2.1 Units of Measurement 2.2 Metric Prefixes 2.3 Scientific Notation 2.4 Significant Figures, Accuracy, and Precision 2.5 Denisty Measurement

### Measurements. SI Units

Measurements When you measure something, you must write the number with appropriate unit. Unit is a standard quantity used to specify the measurement. Without the proper unit, the number you write is meaningless.

### Units represent agreed upon standards for the measured quantities.

Name Pd Date Chemistry Scientific Measurement Guided Inquiry Teacher s Notes Work with your group using your prior knowledge, the textbook (2.1 2.7), internet research, and class discussion to complete

### TIME ESTIMATE FOR THIS LESSON One class period

TITLE OF LESSON Physical Science Unit 1 Lesson 2 Systéme Internationale aka the Metric System Nature of Matter: How do tribes standardize their lives? TIME ESTIMATE FOR THIS LESSON One class period ALIGNMENT

### Chapter 1 An Introduction to Chemistry

1 Chapter 1 An Introduction to Chemistry 1.1 What Is Chemistry, and What Can Chemistry Do for You? Special Topic 1.1: Green Chemistry 1.2 Suggestions for Studying Chemistry 1.3 The Scientific Method 1.4

### Measurement. Chapter 1

Chapter 1 Measurement Figure 1.1 What s the difference between mass and weight? Figure 1.2 How did early clocks measure time? Figure 1.3 Why does a block of iron sink but an iron ship floats? Physics is

### Activity Standard and Metric Measuring

Activity 1.3.1 Standard and Metric Measuring Introduction Measurements are seen and used every day. You have probably worked with measurements at home and at school. Measurements can be seen in the form

### Chapter 3 How Do We Make Measurements?

Chapter 3 How Do We Make Measurements? Chemistry, like all sciences, has its quantitative side. In this chapter, you will be introduced to the units and types of measurement in chemistry. 3.1 Background

### Activity Standard and Metric Measuring

Activity 1.3.1 Standard and Metric Measuring Introduction Measurements are seen and used every day. You have probably worked with measurements at home and at school. Measurements can be seen in the form

### Conversions and Dimensional Analysis

Conversions and Dimensional Analysis Conversions are needed to convert one unit of measure into another equivalent unit of measure. Ratios, sometimes called conversion facts, are fractions that denote

### Homework 1: Exercise 1 Metric - English Conversion [based on the Chauffe & Jefferies (2007)]

MAR 110 HW 1: Exercise 1 Conversions p. 1 1-1. THE METRIC SYSTEM Homework 1: Exercise 1 Metric - English Conversion [based on the Chauffe & Jefferies (2007)] The French developed the metric system during

### Density. Part I: How Dense Is It?

Density Density Part I: How Dense Is It? Everything on Earth is made of matter. Matter is anything that has mass and takes up space. Matter is as simple as a single element or as complex as the entire

Section 2.2 Scientific Notation and Dimensional Analysis In your textbook, read about scientific notation. 1. Circle the figures that are written in scientific notation. 1.61 10 2 1.61 10 10 1.61 100 161

### Chapter 1. Matter, Measurement and Problem Solving. Chapter 1. Helleur. Principles of Chemistry: A Molecular Approach 1 st Ed.

Why Clickers? to refresh the students during the lecture to assess student understanding of a topic to increase student participation in class to encourage student interaction in large lectures peer teaching

### Objectives. Motivation for Learning. Students will

Objectives Students will define intrinsic and extrinsic properties; determine if density is an intrinsic property or extrinsic property; determine the density of various liquids; record data in a table;

### REVIEW SHEETS INTRODUCTORY PHYSICAL SCIENCE MATH 52

REVIEW SHEETS INTRODUCTORY PHYSICAL SCIENCE MATH 52 A Summary of Concepts Needed to be Successful in Mathematics The following sheets list the key concepts which are taught in the specified math course.

### LAB 1 The Scientific Method and Metric System

LAB 1 The Scientific Method and Metric System Overview In this laboratory you will first watch a brief video on the importance of laboratory safety, organization and cleanliness. You will then focus on

### UNIT (1) MEASUREMENTS IN CHEMISTRY

UNIT (1) MEASUREMENTS IN CHEMISTRY Measurements are part of our daily lives. We measure our weights, driving distances, and gallons of gasoline. As a health professional you might measure blood pressure,

### Uncertainty in Measuring Length

Uncertainty in Measuring Length In chemistry, you will be using measured numbers in lab, in exercises, and on tests and quizzes. The number of digits, i.e. significant figures, reported for a numerical

### Name: Seventh Grade Science Teacher: Page 1

Name: Seventh Grade Science Teacher: Page 1 Why should you do this Packet? Dear future 8 th grade student, You are most likely asking yourself, what the heck is this and why do I have to do it? Let me

### The Density of Liquids and Solids

The Density of Liquids and Solids Objectives The objectives of this laboratory are: a) To determine the density of pure water; b) To determine the density of aluminum (applying the technique of water displacement)

### E Mathematics Operations & Applications: B. Measurement Lesson Plan: Basic Measurement: Length

Abstract This required lesson provides the background information necessary for students to understand how to measure length. Within this lesson, there are two options for activities to give each student

### A.P. Physics/Physics Notes Chapter 1 Physics is the study of the nature of matter and energy and its interactions in the

A.P. Physics/Physics Notes Chapter 1 Physics is the study of the nature of matter and energy and its interactions in the fields of mechanics (kinematics and dynamics), electricity and magnetism, waves

### 1. What does each unit represent? (a) mm = (b) m =

Metrics Review Name: Period: You will need a metric ruler and ten pennies for this activity. LENGTH 1. What does each unit represent? (a) mm = (b) m = (c) cm = (d) km = 2. How much does each one equal?

### PHYSICS 151 Notes for Online Lecture #1

PHYSICS 151 Notes for Online Lecture #1 Whenever we measure a quantity, that measurement is reported as a number and a unit of measurement. We say such a quantity has dimensions. Units are a necessity

### Lab 1: Units and Conversions

Lab 1: Units and Conversions The Metric System In order to measure the properties of matter, it is necessary to have a measuring system and within that system, it is necessary to define some standard dimensions,

### CHAPTER 2: MEASUREMENT AND PROBLEM SOLVING

CHAPTER 2: MEASUREMENT AND PROBLEM SOLVING Problems: 1-64, 69-88, 91-120, 123-124 2.1 Measuring Global Temperatures measurement: a number with attached units When scientists collect data, it is important

### 5. Suppose you had to test how well two types of soap work. Describe your experiment using the terms control and variable.

Page # 31: 1. What is the scientific method? A logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories supported by data.

### [The Lord:] Get some wood. Build it 300 cubits by 80 cubits by 40 cubits. [The Lord:] Let's see...a cubit...i used to know what a cubit was.

Quantitative Measurements Introduction Bill Cosby once joked about the imperial system of measurement. Using artistic license, he retold the Biblical story of Noah and the Ark, including the following

### MATH FOR NURSING MEASUREMENTS. Written by: Joe Witkowski and Eileen Phillips

MATH FOR NURSING MEASUREMENTS Written by: Joe Witkowski and Eileen Phillips Section 1: Introduction Quantities have many units, which can be used to measure them. The following table gives common units

### SCIENTIFIC MEASUREMENT

3 SCIENTIFIC MEASUREMENT Conceptual Curriculum Concrete concepts More abstract concepts or math/problem-solving Standard Curriculum Core content Extension topics Honors Curriculum Core honors content Options

### Chapter 1: Measuring Up

Chapter : Measuring Up Chapter : Measuring Up Introduction If you haven t yet read the introduction to this book (pp. iii-x), please do so now. Chemistry is the study of matter and how it changes. When

### Section 1 Tools and Measurement

Section 1 Tools and Measurement Key Concept Scientists must select the appropriate tools to make measurements and collect data, to perform tests, and to analyze data. What You Will Learn Scientists use

### Introducing Measurements in the Laboratory

Introducing Measurements in the Laboratory Objectives The objectives of this laboratory are: a) To use a metric ruler to measure the dimensions of regular geometric shapes, and to use these measurements

### MEASUREMENT. Historical records indicate that the first units of length were based on people s hands, feet and arms. The measurements were:

MEASUREMENT Introduction: People created systems of measurement to address practical problems such as finding the distance between two places, finding the length, width or height of a building, finding

### Stations Lab: Scientific Measurement

Stations Lab: Scientific Measurement Introduction Every measurement has an uncertainty, or built-in error. This error is due to limitations in the measurement scale, the manufacturing process, and the

### 4 September 2008 MAR 110 Homework 1: Met-Eng Conversions p. 1. MAR 110 Homework 1

4 September 2008 MAR 110 Homework 1: Met-Eng Conversions p. 1 1-1. THE METRIC SYSTEM MAR 110 Homework 1 Metric - English Conversion [based on the Chauffe & Jefferies (2007)] The French developed the metric

### Measurements CH 100 EXPERIMENT 1 OBJECTIVES

Measurements OBJECTIVES To obtain measurements of length, mass, volume, temperature, and time. To determine the mass and volume of an unknown rectangular solid. To gain proficiency in using the following

### What is the SI system of measurement?

ALE 3. SI Units of Measure & Unit Conversions Name CHEM 161 K. Marr Team No. Section What is the SI system of measurement? The Model the International System of Units (Reference: Section 1.5 in Silberberg

### DETERMINING THE DENSITY OF LIQUIDS & SOLIDS

DETERMINING THE DENSITY OF LIQUIDS & SOLIDS 17 Density, like color, odor, melting point, and boiling point, is a physical property of matter. Therefore, density may be used in identifying matter. Density

### AP Chemistry A. Allan Chapter 1 Notes - Chemical Foundations

AP Chemistry A. Allan Chapter 1 Notes - Chemical Foundations 1.1 Chemistry: An Overview A. Reaction of hydrogen and oxygen 1. Two molecules of hydrogen react with one molecule of oxygen to form two molecules

### Metric System. The tables above lists the most common metric prefixes and their relationship to the central unit that has no prefix.

Metric System Many properties of matter are quantitative; that is, they are associated with numbers. When a number represents a measured quantity, the unit of that quantity must always be specified. To

### Module 3: Understanding the Metric System

3.1 The Metric System Module 3: Understanding the Metric System 1. Understand the Basic Units of Length used in Health Care Careers The metric system is the most commonly used system of measurement in

### Numbers and Calculations

Numbers and Calculations Topics include: Metric System, Exponential Notation, Significant Figures, and Factor-Unit Calculations Refer to Chemistry 123 Lab Manual for more information and practice. Learn

### Chemistry and Measurement

Chapter 1 Chemistry and Measurement Concept Check 1.1 Matter can be represented as being composed of individual units. For example, the smallest individual unit of matter can be represented as a single

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Chem 2A_Ch2_PT MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) When the prefix milli is used in the metric or SI system, a fundamental unit of

### 2. List the fundamental measures and the units of measurement for each. 3. Given the appropriate information, calculate force, work and power.

Lab Activity 1 The Warm-Up Interpretations Student Learning Objectives After Completing this lab, you should be able to: 1. Define, explain and correctly use the key terms. 2. List the fundamental measures

### Lab Section (Circle) M Tu W Th F Date MEASUREMENTS

Name_ Chem 305 Partner_ Lab Section (Circle) M Tu W Th F Date_ MEASUREMENTS Materials: Ice, sodium chloride, metal samples, urine solution, Tums, aspirin tablets Equipment: Hot plate, thermometers, graduated

### MEASUREMENTS AND ERROR ANALYSIS

MEASUREMENTS AND ERROR ANALYSIS Objective 1. To learn how to use the following measuring devices and understand the uncertainties associated with them. a) meter stick b) metric ruler c) triple-beam balance