Front

What does a base release when placed in water?

Back

Hydroxide ions (OH-) are released when a base is placed in water.

Front

A substance with a pH of 11 is which of the following?

Back

A substance with a pH of 11 is a base.

Front

A pH of 3 is how many times more acidic than a pH of 5?

Back

A pH of 3 is 100 times more acidic than a pH of 5.

Front

What is a mixture of chemicals that react with a base/acid to keep pH in a particular range?

Back

A buffer is a mixture of chemicals that helps maintain a stable pH.

Front

What does pH measure?

Back

pH measures the amount of hydrogen (H+) ions in a solution.

Front

What is an acid?

Back

An acid is a substance that donates hydrogen ions (H+) in a solution.

Front

What is a base?

Back

A base is a substance that accepts hydrogen ions (H+) or releases hydroxide ions (OH-) in a solution.

Front

What is the pH scale?

Back

The pH scale is a logarithmic scale that measures the acidity or basicity of a solution, ranging from 0 to 14.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7, meaning it has equal concentrations of H+ and OH- ions.

Front

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

Back

The pH of a solution decreases (becomes more acidic) when an acid is added.