Question

What Is an Acid? and What Are Atoms?​

Answer 1

Answer:

Acid, any substance that in water solution tastes sour, changes the colour of certain indicators (e.g., reddens blue litmus paper), reacts with some metals (e.g., iron) to liberate hydrogen, reacts with bases to form salts, and promotes certain chemical reactions (acid catalysis).

An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.

Explanation:

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Answer 2

Answer:

It is a substance with particular properties including turning litmus red , neutralizing alkalies , etc. is an acid.

Atoms are the smallest particles that can exist.