Which of the following statements about physical and chemical changes is FALSE?
A) In a chemical change,matter changes its composition.
B) In a physical change,matter does not change its composition.
C) Phase changes are always physical changes.
D) Chemical reactions are chemical changes.
E) All of the above statements are true.
Correct Answer:
Verified
Q70: How would you classify sugar?
A)pure substance-compound
B)mixture-heterogeneous
C)pure substance-element
D)mixture-homogeneous
E)none
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A)pure substance-compound
B)mixture-heterogeneous
C)pure
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Q76: Which of the following items is a
Q77: Which of the following statements is FALSE?
A)Matter
Q78: Physical properties are:
A)those that a substance displays
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Q80: Which of the following items is a
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