Question

identify the characteristics of an acid and a base.

Explanation:

An acid is a substance that donates protons (H⁺ ions) in a solution, and often has a sour taste, can react with metals to produce hydrogen gas, and turns blue - litmus paper red. A base is a substance that accepts protons (H⁺ ions) or donates hydroxide (OH⁻) ions in a solution. Bases have a bitter taste, a slippery feel, and turn red - litmus paper blue.

Answer:

Acid: Donates protons, sour taste, reacts with metals, turns blue - litmus red. Base: Accepts protons/donates OH⁻, bitter taste, slippery feel, turns red - litmus blue.