pH Acids and Bases

Front

What is pH?

Back

pH is a scale used to measure how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What pH value indicates a basic solution?

Back

A basic solution has a pH value greater than 7.

Front

What pH value indicates an acidic solution?

Back

An acidic solution has a pH value less than 7.

Front

What is the pH of a neutral solution?

Back

The pH of a neutral solution is 7.

Front

What happens to the pH when an acid is added to a neutral solution?

Back

The pH decreases, making the solution more acidic.

Front

What happens to the pH when a base is added to a neutral solution?

Back

The pH increases, making the solution more basic.

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 releases hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What is the relationship between pH and the strength of an acid?

Back

The lower the pH, the stronger the acid.

Front

What is the relationship between pH and the strength of a base?

Back

The higher the pH, the stronger the base.