An acid and a base react with each other. Generally, the product of this reaction is salt and water.

This statement is referring to a type of chemical reaction known as a neutralization reaction. Here's a step-by-step breakdown:

1. An acid is a substance that donates a proton (H+) in a chemical reaction, while a base is a substance that accepts a proton.

2. When an acid and a base react, they neutralize each other. This is why the reaction is called a "neutralization" reaction.

3. The products of a neutralization reaction are usually a salt and water. A salt is formed from the positive ion of the base and the negative ion of the acid.

4. For example, if hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH), the products are sodium chloride (NaCl), which is a salt, and water (H2O).

5. The general equation for a neutralization reaction is: Acid + Base → Salt + Water

6. This type of reaction is exothermic, meaning it releases heat.