Module 6: Exponents and Logarithms

 

 

Did You Know?

This is a photo of solutions with a pH indicator strip.

© Schlierner/37737907/Fotolia

Dr. Soren Sorensen (1868–1939) developed the pH scale to have a universal measurement of the acidity of solutions. There are different explanations of what the term pH represents, but some people believe that pH stands for power of hydrogen.


 

In Try This 4 you looked at the pH scale, which is another example of a logarithmic scale. View Solving pH Scale Problems to see a possible method that could be used to solve the questions in Try This 4.

 

 

This is a play button that opens Solving pH Scale Problems.


textbook

The decibel scale is a logarithmic scale used to measure sound intensity. As you read through the following example, make note of the similarities and differences between this scale and the pH scale. Read “Example 4” on pages 398 to 399 of the textbook.

 

Self-Check 3
  1. Complete question 13 on page 401 of the textbook. Answer
  2. Complete question 16 on page 402 of the textbook. Answer

formula

Add the following formulas to your copy of Formula Sheet.