4.3.5

The pH Scale

Test yourself

Acidic vs Neutral vs Alkaline

Acidic substances have a pH less than 7; neutral substances have a pH of exactly 7; alkaline substances have a pH greater than 7.

pH and the Concentration of H+ Ions

The numerical pH scale is a measure of the concentration of H+ ions in a solution. For every increase of 1 in pH, the concentration of H+ ions gets divided by 10.

Jump to other topics

1Atomic Structure

2Chemical Bonding

3Quantitative Chemistry

4Chemical Changes

5Energy Changes

6The Rate & Extent of Chemical Change

7Organic Chemistry

8Chemical Analysis

9Chemistry of the Atmosphere

10Using Resources

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