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 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 is the pH of pure water?

Back

The pH of pure water is 7, which is considered neutral.

Front

What is the significance of a pH value of 7?

Back

A pH value of 7 indicates a neutral solution, meaning it is neither acidic nor basic.

Front

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

Back

When an acid is added to a solution, the pH decreases, indicating an increase in acidity.

Front

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

Back

When a base is added to a solution, the pH increases, indicating an increase in basicity.

Front

What is the relationship between pH and hydrogen ion concentration?

Back

The pH of a solution is inversely related to the hydrogen ion concentration; as the concentration of H+ increases, pH decreases.

Front

What is a strong acid?

Back

A strong acid is one that completely dissociates in solution, releasing all of its hydrogen ions.

Front

What is a weak acid?

Back

A weak acid is one that partially dissociates in solution, meaning not all of its hydrogen ions are released.