ph and buffers

Front

What is the pH scale range?

Back

0-14

Front

What does the 'H' in pH stand for?

Back

Hydrogen

Front

What pH value indicates an acid?

Back

Lower than 7

Front

What pH value indicates a base?

Back

Higher than 7

Front

If a solution has a pH of 9, is it an acid or a base?

Back

Base

Front

If a solution has a pH of 12, is it an acid or a base?

Back

Base

Front

What is the pH of pure water?

Back

7 (neutral)

Front

What happens to pH when an acid is added to water?

Back

pH decreases (becomes more acidic)

Front

What happens to pH when a base is added to water?

Back

pH increases (becomes more basic)

Front

What is a buffer solution?

Back

A solution that resists changes in pH when small amounts of acid or base are added.