Which of the following is a chemical change?
A) the freezing of water to form ice
B) hammering zinc into a thin film
C) crushing of lump of sulfur into yellow powder
D) the boiling of water to form steam
E) the reaction of chlorine gas and sodium to form salt
Correct Answer:
Verified
Q25: The content of a container filled with
Q26: The prefix "milli" and the prefix "micro"
Q27: The quantity of matter in an object
Q28: Which of the following is longest?
A)3.0 nm
B)300
Q29: Sulfuric acid is:
A)a homogeneous mixture
B)a compound
C)an element
D)a
Q31: One inch is equal to:
A)2.54 cm
B)2.54 m
C)1/(2.54)cm
D)1.09
Q32: Which of the following are forms of
Q33: Saltwater is:
A)a mixture
B)only one compound
C)an element
D)a molecule
E)an
Q34: Which one of the following would be
Q35: The SI unit for mass is:
A)kilogram
B)gram
C)pound
D)ounce
E)newton
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