BRAINLIESTTTT ASAP!!!

1. Which statement is true about sodium chloride (NaCl)?

It is a salt because it decreases the concentration of metallic ions.
It is an acid because it is formed by the reaction of a salt and an acid.
It is a salt because it is formed by the reaction of an acid and a base.
It is an acid because it increases the concentration of nonmetallic ions.

2. Which of the following increases the concentration of OH- ions?

Acid
Base
Water
Salt