Question

A chemical mixture requires 2 chemicals.
a. true
b. false

Answer 1

Yes true because a chemical substance cannot react on itself  it needs another chemical to react

Answer 2

a. true.

A chemical mixture requires 2 chemicals. Mixture in the chemistry is material made up of two or more different substances that is mainly mixed with something.

In fact, it also mainly refers to physical combination of two or more substances that has the identifies mainly retained as well as  mixed in the form of solutions, colloid and suspensions.