# A compound differs from a mixture in that a compound always has what?

Oct 21, 2016

#### Answer:

Only one type of molecule or ion-pair.

#### Explanation:

Ethanol - consists only of $C {H}_{3} C {H}_{2} O H$. Sodium chloride consists only of NaCl. Water consists only of ${H}_{2} O$.

But mixtures consist of more than one type of molecule of ion pair. Iron filings mixed with sodium chloride - contains Iron (Fe) and also sodium chloride (NaCl).