Which of the following is a chemical change?
A) the freezing of water to form ice
B) hammering zinc into a thin film
C) the inability of gold to react with water
D) the boiling of water to form steam
E) the reaction of chlorine gas and sodium to form salt
Correct Answer:
Verified
Q21: Which of the following is a compound?
A)water
B)oxygen
C)heat
D)salad
Q25: The content of a container filled with
Q27: The quantity of matter in an object
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
Q36: Oxygen is:
A)a mixture
B)a compound
C)an element
D)a solution
E)always combined
Q38: Which of the following is longest?
A) 3.0
Q40: Sulfur dioxide gas is:
A)a homogeneous mixture
B)a compound
C)an
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