Acids and Bases

Front

What is the pH scale?

Back

The pH scale measures 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 strong acid?

Back

A strong acid typically has a pH value between 1 and 3.

Front

What pH value indicates a strong base?

Back

A strong base typically has a pH value between 11 and 14.

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

Front

What happens to litmus paper in an acidic solution?

Back

Blue litmus paper turns red in an acidic solution.

Front

What happens to litmus paper in a basic solution?

Back

Red litmus paper turns blue in a basic solution.

Front

What is the neutral pH value?

Back

The neutral pH value is 7, indicating a balance between acids and bases.

Front

What is KOH?

Back

KOH, or potassium hydroxide, is a strong base.

Front

What is the pH range of a weak acid?

Back

The pH range of a weak acid is typically between 4 and 6.