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Which of these is an element? A. Oxygen B. Air C. Water D. Sodium chlorine

Which of these is an element? A. Oxygen B. Air C. Water D. Sodium chlorine
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4 votes
Which of these is an element?

A. Oxygen
B. Air
C. Water
D. Sodium chlorine

User Andrew Latham
by
8.3k points

2 Answers

4 votes
The answer is A. Oxygen.

Oxygen is the only element of the answer choices. D. is considered a compound because it's made up of two elements from the periodic table. B. and C. are not considered elements in the periodic table either.

Therefore, the answer is A.
User NAkhmedov
by
7.4k points
2 votes
The answer is:
A. Oxygen

Air contains more than one substance, water is chemically made up of oxygen and hydrogen, and sodium chlorine is a mixture of sodium and chlorine.

Hope it helps :)
User FredBones
by
7.9k points
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