209k views
4 votes
Which is not a compound?


sugar
water
silicon dioxide
gold

2 Answers

5 votes
Gold is not a compound it is a element
User Dvaergiller
by
8.2k points
5 votes

Answer: gold

Step-by-step explanation:

Element is a pure substance which is composed of atoms of similar elements. Example: Argon with atomic symbol
Ar

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Example: Water with formula
H_2O and contains hydrogen and oxygen in a fixed ratio by mass

1. Sugar has chemical formula of [texC_{12}H_{22}O_{11}[/tex] and thus is a compound.

2. Water has chemical formula of
H_(2)O and thus is a compound.

3. Silicon dioxide has chemical formula of
SiO_2 and thus is a compound.

4. Gold has chemical formula of
Au and thus is an element.

User Mateusz Kaflowski
by
8.5k points

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