Question

17, A compound is a substance composed of two or
more elements that are
(1) chemically combined in a fixed proportion
(2) chemically combined in a variable proportion
(3) physically mixed in a variable proportion
((4) physically mixed in a fixed proportion

Answer 1

Answer:

A

Explanation:

Compounds are chemically combined in a fixed proportion . Like Hydrogen and Oxygen together form H2O, it is in fixed proportion 2 Hydrogen for one Oxygen. Also, they are chemically combined thus water has different properties than the individual elements that make it.