pH Scale Flashcard

Front

What is the pH scale?

Back

The pH scale is a numerical scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14.

Front

What pH value indicates a neutral solution?

Back

A pH value of 7 indicates a neutral solution.

Front

What is an acid?

Back

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

Front

What is a base?

Back

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

Front

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

Back

The pH of the solution decreases, becoming more acidic.

Front

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

Back

The pH of the solution increases, becoming more basic.

Front

What is the significance of a pH of 0?

Back

A pH of 0 indicates a highly acidic solution.

Front

What is the significance of a pH of 14?

Back

A pH of 14 indicates a highly basic (alkaline) solution.

Front

What is a buffer?

Back

A buffer is a solution that resists changes in pH when small amounts of acid or base are added.

Front

What taste is commonly associated with acids?

Back

Acids are commonly associated with a sour taste.