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Which of these substances are compounds? How do you know? A. Salt (NaCl) B. Nitrogen (N) C. Helium (He) D. Water (H2O)
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Which of these substances are compounds? How do you know?

A. Salt (NaCl)
B. Nitrogen (N)
C. Helium (He)
D. Water (H2O)

User Bchhun
by
8.5k points

1 Answer

2 votes
Salt because it's a solid and helium and nitrogen are gases.
Water is a liquid because it's form can change.
User Jesus Fernandez
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