Which of the following elements is a metal?
A) Ca, calcium
B) Na, sodium
C) Hg, mercury
D) all of these
Correct Answer:
Verified
Q15: Separating a mixture of iron and sulfur
Q16: Which is a chemical property?
A) boiling point
B)
Q17: Which of the following is not a
Q18: The equation, 2 C(s) + O2(g)
Q19: Which term describes energy?
A) motion
B) heat
C) light
D)
Q21: How would you separate a mixture of
Q22: What prefix is the largest?
A) mega
B) centi
C)
Q23: Potential energy is defined as
A) heat energy.
B)
Q24: For which of the following is it
Q25: The quantity 10-9 (one billionth) is designated
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