Summarize: Compare all the acidic substances and all the alkaline substances.

A. In general, what types of substances tend to be acidic?
B. What types of substances tend to be alkaline?

A. Acidic substances tend to have a pH below 7 and release hydrogen ions when dissolved in water. Examples include vinegar, lemon juice, and battery acid.

B. Alkaline substances tend to have a pH above 7 and release hydroxide ions when dissolved in water. Examples include baking soda, ammonia, and soaps.