Which of the following is not a compound?
A) air
B) ammonia
C) water
D) salt
E) All are compounds.
Correct Answer:
Verified
Q6: How many different elements are in a
Q7: Which of these statements is true?
A)A molecule
Q8: Which of the following statements is true?
A)An
Q9: A molecule has
A)mass.
B)structure.
C)energy.
D)all of these
E)none of these
Q10: Atoms heavier than helium were made by
A)photosynthesis.
B)thermonuclear
Q13: If we doubled the magnifying power of
Q13: Which of the following are electrically neutral?
A)proton
B)neutron
C)electron
D)ion
E)none
Q14: Which has the greatest number of protons
Q15: In an electrically neutral atom,the number of
Q16: A force that determines the chemical properties
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