Question

What is true of a compound?

1) It does not always retain the properties of the substances that make it up
2) It must have water as one of its components
3) It requires heat energy to make
4) It requires electrical energy to make

Answer 1

A compound is a substance that consists of two or more elements and has a unique composition. It does not always retain the properties of the substances that make it up.

Step-by-step explanation:

A compound is a substance that consists of two or more elements. It has a unique composition that is always the same. The smallest particle of a compound is called a molecule. A compound does not always retain the properties of the substances that make it up.