pH scale

Front

What is the pH scale?

Back

The pH scale is a measure of how acidic or basic a solution is, ranging from 0 to 14, where 7 is neutral.

Front

What pH value indicates a neutral solution?

Back

A pH value of 7 indicates a neutral solution.

Front

What pH range indicates an acidic solution?

Back

An acidic solution has a pH less than 7.

Front

What pH range indicates a basic (alkaline) solution?

Back

A basic solution has a pH greater than 7.

Front

What is an acid in terms of pH?

Back

An acid is a substance that produces a solution with a pH less than 7.

Front

What is a base in terms of pH?

Back

A base is a substance that produces a solution with a pH greater than 7.

Front

What is the weakest acid among common substances?

Back

Cheese, with a pH of 6, is considered a weak acid.

Front

What ion do acids release in solution?

Back

Acids release hydrogen ions (H+) in solution.

Front

What ion do bases release in solution?

Back

Bases release hydroxide ions (OH-) in solution.

Front

How does the pH scale relate to the concentration of H+ ions?

Back

The pH scale is logarithmic; each whole number change on the scale represents a tenfold change in H+ ion concentration.