Question

1. boyle's law states that the volume of a gas is inversely proportional to its pressure if the,
A. temperature and number of particles are constant.
B. temperature reaches absolute zero.
C. number of particles decreases.
D. temperature and number of particles are doubled.

2. which phase change is the reverse of condensation?
A. freezing.
B. sublimation.
C. vaporization.
D. melting.

3. during a phase change, the temperature of a substance,
A. increases
B. decreases
C. does not change
D. increases or decreases
please and thank you

Answer 1

4. during which phase change do water molecules form crystal lattice?
A. melting.
B.freezing
C. boiling
D. condensing

5. in which phase change does a substance change from a solid to a gas or vapor without changing to a liquid first?
A. sublimation
B. deposition
C. vaporization
D. melting

6. which of the following phase changes is an exothermic change?
A. sublimation
B. deposition
C. vaporization
D. melting

7. the _____ theory of matter states that all particles of matter are in constant motion.

8. a graph representing charles' law shows that the ______ of gas increases at the same rate as the temperature of the gas.

9. during vaporization, a substance changes from a liquid to a(n) _________

10. during a(n) ________ change, a system absorbs energy from its surroundings.

Answer 2

what are your choices?