# Ch 2: Measurement and Problem Solving

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.

Final Exam
Chapter Exam

### Earning College Credit

Did you know… We have over 95 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.