Chapter 9.7
Logarithmic scale: pH scale
What You'll Learn
Understand the pH scale as a logarithmic measure of acidity and basicity
Interpret pH values from 0-14 to classify substances as acidic, neutral, or basic
Calculate how many times more acidic or basic one substance is than another
Apply logarithmic equations to solve for unknown pH levels
Recognize that pH differences represent powers of 10 in concentration
What You'll Practice
1
Comparing acidity and basicity using pH level differences
2
Solving for unknown pH values using logarithmic equations
3
Calculating multiplicative relationships between substances on the pH scale
4
Working with base-10 exponential comparisons between solutions
Why This Matters
The pH scale connects chemistry and mathematics, showing how logarithms model real-world measurements. Understanding pH is essential in chemistry, biology, environmental science, and everyday applications like testing water quality or understanding food preservation.
Before You Start — Make Sure You Can:
This Unit Includes
2 Video lessons
Practice exercises
Skills
Logarithms
pH Scale
Base 10
Exponential Functions
Scientific Applications
Problem Solving
Chemistry Math
