Heat being added or taken away from a substance may cause
a change in chemical propertie...
Heat being added or taken away from a substance may cause
a change in chemical properties
a change in state
change in the boiling point
change in the freezing point
question 2 (multiple choice worth 2 points)
“phase change” and “change of state”
are opposites
sometimes mean the same thing
are unrelated
are two terms for the same thing
question 3 (multiple choice worth 2 points)
which of the following statements about freezing points is true?
the boiling point is the same for all substances
the freezing point of a substance is higher than its boiling point
the freezing point of a substance is lower than its boiling point
the freezing point of a substance can be the same as the boiling point
question 4 (multiple choice worth 2 points)
a liquid may reach its boiling point if
heat is added to it
there are no gases in it
its solid melts easily
the temperature is low enough
question 5 (multiple choice worth 2 points)
when a liquid becomes a solid, this is called
freezing point
thermal point
boiling point
flash point
question 6 (multiple choice worth 2 points)
in condensation,
a gas becomes a liquid.
a gas becomes a solid.
a solid becomes a gas.
a liquid becomes a gas.
question 7 (essay worth 3 points)
explain how changes in temperature affect the particle motion of a substance.
Answers: 1
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