Acids and Bases

Front

What is an acid?

Back

An acid is a substance that donates hydrogen ions (H+) in a solution, resulting in a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts hydrogen ions (H+) or donates hydroxide ions (OH-) in a solution, resulting in a pH greater than 7.

Front

What is pH?

Back

pH is a scale used to measure the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What happens to pH when an acid is added to water?

Back

The pH decreases as the concentration of hydrogen ions (H+) increases.

Front

What happens to pH when a base is added to water?

Back

The pH increases as the concentration of hydroxide ions (OH-) increases.

Front

What is the pH range of strong acids?

Back

Strong acids typically have a pH closer to 0.

Front

What is the pH range of strong bases?

Back

Strong bases typically have a pH closer to 14.

Front

What is a neutral solution?

Back

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

Front

What is the role of indicators in acid-base chemistry?

Back

Indicators are substances that change color in response to changes in pH, helping to identify whether a solution is acidic or basic.

Front

What is a common example of an acid?

Back

Lemon juice is a common example of an acid.