Acids and Bases

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What does pH measure?

Back

pH measures the acidity or basicity of a solution on a scale from 0 to 14.

Front

What is the pH of neutral solutions?

Back

The pH of neutral solutions is 7.

Front

What happens to blue litmus paper in an acid?

Back

Blue litmus paper turns red when placed in an acid.

Front

What happens to red litmus paper in a base?

Back

Red litmus paper turns blue when placed in a base.

Front

What is a common property of acids?

Back

Acids typically taste sour.

Front

What is a common property of bases?

Back

Bases typically feel slippery to the touch.

Front

What is the weakest base among pH values 8, 11, 14?

Back

The weakest base is pH 8.

Front

What is the strongest acid?

Back

The strongest acids have a pH close to 0.