Acids and Bases

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a substance is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What pH value indicates a strong acid?

Back

A strong acid typically has a pH value closer to 0.

Front

What pH value indicates a strong base?

Back

A strong base typically has a pH value closer to 14.

Front

What happens to blue litmus paper in an acidic solution?

Back

Blue litmus paper turns red in an acidic solution.

Front

What happens to red litmus paper in a basic solution?

Back

Red litmus paper turns blue in a basic solution.

Front

What is an example of a strong acid?

Back

Hydrochloric acid (HCl) is an example of a strong acid.

Front

What is an example of a strong base?

Back

Sodium hydroxide (NaOH) is an example of a strong base.

Front

What does a pH of 7 indicate?

Back

A pH of 7 indicates a neutral solution, such as pure water.

Front

What is the role of litmus paper in chemistry?

Back

Litmus paper is used to determine the acidity or basicity of a solution.

Front

What is the difference between an acid and a base?

Back

Acids donate protons (H+) in a solution, while bases accept protons.