A substance with pH above 7 is called what?

A substance with pH above 7 is called what?

• A. Acid
• B. Base
• C. Heat capacity
• D. Endothermic

Answer: (B)

pH measures how acidic or basic a solution is. The pH scale runs from about 0 to 14, with 7 being neutral. Substances with pH below 7 are acids, while those with pH above 7 are bases (also called alkaline). Bases have more hydroxide ions (OH−) available, or they reduce the activity of hydrogen ions, which raises the pH. That’s why a substance with pH above 7 is called a base. The other terms aren’t about acidity: heat capacity describes how much energy a substance can store, and endothermic refers to processes that absorb heat.

pH measures how acidic or basic a solution is. The pH scale runs from about 0 to 14, with 7 being neutral. Substances with pH below 7 are acids, while those with pH above 7 are bases (also called alkaline). Bases have more hydroxide ions (OH−) available, or they reduce the activity of hydrogen ions, which raises the pH. That’s why a substance with pH above 7 is called a base.

The other terms aren’t about acidity: heat capacity describes how much energy a substance can store, and endothermic refers to processes that absorb heat.