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
Chemistry, 21.06.2019 20:30, notkeandre9
9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water
Answers: 1
Chemistry, 23.06.2019 01:00, stefaniethibodeaux
Substance 33°f 100°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
Answers: 1
Chemistry, 23.06.2019 18:10, conendsley
Dalton completing an investigation in the science lab he observes that a sample of liquid turns to gas at 135c what’s this temperature called?
Answers: 1
Mathematics, 27.06.2020 17:01