Acids, Bases, and the pH Scale

Acids, Bases, and the pH Scale

Why Understanding pH Matters

What the pH Scale is and How to Read It

Knowledge Checkpoint!

4 questions

Multiple Choice

The pH scale goes from

• 0-7

• 7-14

• 0-14

Multiple Choice

On the pH scale, acidic solutions have a pH of

• 0 - 6.9

• 7

• 7.1 - 14

Multiple Choice

On the pH scale, basic solutions have a pH of

• 0 - 6.9

• 7

• 7.1 - 14

Multiple Choice

On the pH scale, neutral solutions have a pH of

• < 7

• 7

• > 7

Next 4 images are pH Scales with various solutions listed by their pH

Knowledge Checkpoint!

5 questions

Multiple Choice

A solution with a pH of 9.5 would be

• acidic

• neutral

• basic

Multiple Choice

A solution with a pH of 3.2 would be

• acidic

• neutral

• basic

Multiple Choice

Pure H₂O has a pH of 7 so it is

• acidic

• neutral

• basic

Multiple Choice

Which pH value below would be the most acidic?

• 2.7

• 0

• 6.9

• 7

• 14

Multiple Choice

Which pH value below would be the most basic?

• 0

• 10.7

• 8.1

• 14

• 7.1

Small Increase or Decrease in pH has Large Effects

How Are Sharp and Sudden pH Changes Prevented?

Knowledge Checkpoint!

2 questions and 1 summary

Multiple Choice

pH buffers are used to

• create sharp / sudden changes in pH

• maintain pH at the exact same level at all times

• prevent sharp / sudden changes in pH

Multiple Choice

Sharp and sudden changes in pH does not affect organims

• True

• False

Open Ended

Think about what you learned today and type a summary explaining important information about Acids, Bases, and the pH scale.