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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)

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
by
8.1k points
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