Question

An acid

A. has a value above seven on the pH scale.
B. is a chemical that takes hydrogen ions from a solution.
C. has a value of seven on the pH scale.
D. is a chemical that adds hydrogen ions to a solution.
E. All answers are correct.

Answer 1

An acid is a chemical that adds hydrogen ions to a solution. Acids have a pH less than 7 and can be harmful to organisms and materials. Hydrochloric acid and lemon juice are examples of strong acids.

Step-by-step explanation:

An acid is a chemical that adds hydrogen ions to a solution. Acids have a pH less than 7 and are defined as solutions with a higher concentration of hydronium ions than pure water. As the hydronium ion concentration increases, the pH value decreases. For example, hydrochloric acid and lemon juice are very acidic and readily give up hydrogen ions when added to water.