Acids and Bases

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a chemical reaction 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 chemical reaction and has a pH greater than 7.

Front

What does pH measure?

Back

pH measures the concentration of hydrogen ions (H+) in a solution, indicating its acidity or basicity.

Front

What is the pH range for acids?

Back

The pH range for acids is from 0 to 6.9.

Front

What is the pH range for bases?

Back

The pH range for bases is from 7.1 to 14.

Front

What happens to blue litmus paper in an acid?

Back

Blue litmus paper turns red when it comes into contact with an acid.

Front

What happens to red litmus paper in a base?

Back

Red litmus paper turns blue when it comes into contact with a base.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7, meaning it is neither acidic nor basic.

Front

What is the strongest acid on the pH scale?

Back

The strongest acid has a pH of 0.

Front

What is the weakest base on the pH scale?

Back

The weakest base has a pH just above 7, typically around 8.