Ch 2: Measurement and Problem Solving

About This Chapter

Watch measurement video lessons and learn about SI base units, metric system conversions, scientific notation and more. These easy-to-follow lessons are just a portion of our online study guide and video collection.

Measurement and Problem Solving - Chapter Summary and Learning Objectives

Video lessons in the measurement and problem solving chapter can familiarize you with the systems and units scientists use to measure physical and chemical properties of matter. You can also explore some of the concepts used to determine the accuracy of a mathematical calculation and rules for solving multi-step problems involving conversion factors. After completing this chapter, you should be able to do the following:

  • Identify units for measuring physical quantities
  • Convert metric units into other base units
  • Pinpoint an equation's significant figures
  • Accurately report standard numbers using scientific notation

Video Objectives
Measurements and Uncertainty in Chemistry Distinguishes between accuracy and precision and uses the convention of significant figures to express the uncertainty of measurements.
Elements of the Si: Base and Derived Units Describes the SI base and derived units used to measure electric current, thermodynamic temperature and other quantities.
The Metric System: Units and Conversion Names the metric units for length, mass, time, volume and density and demonstrates how to convert among the most common prefixes, including milli, centi, base, and kilo. Methods for reporting precise measurements are also discussed.
Unit Conversion and Dimensional Analysis Explains how to convert among various units using conversion factors.
Significant Figures and Scientific Notation Demonstrates how to use the correct number of significant figures when making calculations and shows how to report answers using scientific notation.
How to Measure Temperature in the Lab: Instruments and Process Discusses the processes and instruments involved in measuring temperature.

6 Lessons in Chapter 2: Measurement and Problem Solving
Measurements & Uncertainty in Science

1. Measurements & Uncertainty in Science

In this lesson, you will discover the importance of precision and accuracy in science while learning to make measurements. Also, you will understand how to perform calculations with measurements that conserve precision and limit uncertainty.

Elements of the SI: Base & Derived Units

2. Elements of the SI: Base & Derived Units

Discover what we mean by SI units. Then explore SI units further by learning about all the base units, and several examples of the derived units that make up the system.

The Metric System: Units and Conversion

3. The Metric System: Units and Conversion

Just like you and your friend communicate using the same language, scientists all over the world need to use the same language when reporting the measurements they make. This language is called the metric system. In this lesson we will cover the metric units for length, mass, volume, density and temperature, and also discuss how to convert among them.

Unit Conversion and Dimensional Analysis

4. Unit Conversion and Dimensional Analysis

How is solving a chemistry problem like playing dominoes? Watch this lesson to find out how you can use your domino skills to solve almost any chemistry problem.

Significant Figures and Scientific Notation

5. Significant Figures and Scientific Notation

Are 7.5 grams and 7.50 grams the same? How do scientists represent very large and very small quantities? Find out the answers to these questions in this video.

Measuring Temperature in the Lab: Instruments & Process

6. Measuring Temperature in the Lab: Instruments & Process

In this lesson, discover what temperature is a measurement of while learning how to properly measure temperature in a lab. Learn about the important instruments needed for this essential lab skill.

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