Acids, bases & pH

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+) in a solution and has a pH greater than 7.

Front

What is the pH scale?

Back

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

Front

What pH value indicates a neutral substance?

Back

A pH value of 7 indicates a neutral substance.

Front

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

Back

The pH of the solution decreases, making it more acidic.

Front

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

Back

The pH of the solution increases, making it more basic.

Front

What is a strong acid?

Back

A strong acid is an acid that completely dissociates in water, releasing all of its protons.

Front

What is a weak acid?

Back

A weak acid is an acid that partially dissociates in water, releasing some but not all of its protons.

Front

What is a strong base?

Back

A strong base is a base that completely dissociates in water, accepting all available protons.

Front

What is a weak base?

Back

A weak base is a base that partially dissociates in water, accepting some but not all available protons.