What is a compound?
A.
a mixture of two or more elements that do not combine chemically
B.
a pure substance in which the atoms of three or more elements are chemically combined
C.
a mixture of two or more elements that retains the essential properties of each element
D.
a pure substance in which the atoms of two or more elements are chemically combined

Respuesta :

Answer:

D

Explanation:

Pure water is a compound made from two elements - hydrogen and oxygen. The ratio of hydrogen to oxygen in water is always 2:1. Each molecule of water contains two hydrogen atoms bonded to a single oxygen atom.

Answer:

C.

Explanation:

A compound is a thing that is composed of two or more separate elements; a mixture. Which is described in option C