pH Indicators and Antacids

Front

What is a base?

Back

A base is a substance that releases OH- ions when dissolved in water.

Front

What is an indicator?

Back

An indicator is a substance that changes color in response to the acidity or basicity of a solution.

Front

Which substance is more acidic than lemon juice?

Back

Hydrochloric acid is more acidic than lemon juice.

Front

What is the pH of a solution with a pH of 3.6?

Back

A solution with a pH of 3.6 is considered an acid.

Front

Is pure water acidic, basic, or neutral?

Back

Pure water is neutral.

Front

What does a pH value below 7 indicate?

Back

A pH value below 7 indicates an acidic solution.

Front

What does a pH value above 7 indicate?

Back

A pH value above 7 indicates a basic (alkaline) solution.

Front

What is the pH range of acids?

Back

The pH range of acids is from 0 to 6.9.

Front

What is the pH range of bases?

Back

The pH range of bases is from 7.1 to 14.

Front

What is the pH of lemon juice?

Back

The pH of lemon juice is typically around 2 to 3.