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- 1. Multiple Choice
How do the molecules in a solid behave?
Move around each other
move in place
Moving away from each other
Do not move
- 2. Multiple Choice
How do the molecules in a gas behave?
move in place
move around each other
move away from each other
do not move
- 3. Multiple Choice
How do the molecules in a liquid behave
do not move
move away from each other
move in place
move around each other
- 4. Multiple Choice
A substance's molecules are moving around each other. What will happen if you transfer energy into the substance and cause a phase change?
molecules will move slower, substance will be a solid
molecules will move slower, substance will be a liquid
molecules will move faster, substance will be a liquid
molecules will move faster, substance will be a gas
- 5. Multiple Choice
If you transfer energy into a substance how will the molecules change?
molecules will move faster
molecules will move slower
molecules will stop moving
- 6. Multiple Choice
If you transfer energy out of a substance how will the movement of the molecules change?
molecules will move faster
molecules will move slower
molecules will stop moving
molecules do not move
- 7. Multiple Choice
Will a phase change always occur when you transfer energy into or out of substance?
Yes
No
- 8. Multiple Choice
You have two substances at room temperature. Both substances are a liquid. You transfer the same amount of energy out of both substances but only one substance changes phase. What happened?
the substance with the weaker attraction will change to a gas
the substance with the stronger attraction will turn to a solid
the substance with the stronger attraction will turn to a gas
the substance with the weaker attraction will turn to a solid
- 9. Multiple Choice
You leave a glass of cold water on the table in the morning. When you come home after school the glass of water is warm. what happened to the water molecules while you were at school?
the molecules moved closer together
the molecules started moving faster
then water lost cold molecules
the molecules became larger
- 10. Multiple Choice
You have a substance in a jar. In the beginning the molecules move around each other. Later the molecules are moving away from each other. What happened to the substance?
Before the substance was a gas. Later it was a liquid.
Before the substance was a solid. Later it was a liquid.
Before the substance was a liquid. Later it was a solid.
Before the substance was a liquid. Later it was a gas.
- 11. Multiple Choice
You find a substance in your water bottle. The molecules in the bottle are moving around each other. You increase the speed of the molecules and cause a phase change. How did you do this and how did this affect the substance? You transferred energy....
into the substance and it changed to a gas
into the substance and it changed to a liquid
out of the substance and it changed to a solid
out of the substance and it changed to a liquid
- 12. Multiple Choice
What happens to molecules when their kinetic energy increases?
It depends on the molecules
they move faster
they move slower
they stay the same
- 13. Multiple Choice
You decide to make a popsicle. To do this you need to change the phase from a liquid to a solid. What happened to the molecules when it changed phases?
before molecules were moving around each other. after they were moving away from each other.
before they were moving in place. after they were moving around each other.
before they were moving away from each other. after they were moving around each other
before they were moving around each other. after they were moving in place.
- 14. Multiple Choice
You have a substance that is a liquid. You transfer energy out of the substance and it changes phases. What happened to the movement of the molecules?
moved faster and started moving away from each other
moved faster and started moving around each other
moved slower and started moving in place
moved slower and started moving around each other
- 15. Multiple Choice
A phase change occurs when the kinetic energy increases enough .....
a phase change will not occur
that the attraction between molecules pulls them together
to overcome the attraction between molecules
- 16. Multiple Choice
a phase change occurs when the kinetic energy decreases enough.....
so that the attraction between molecules pulls them together
a change will not occur
to overcome the attraction between molecules
- 17. Multiple Choice
Transferring energy to a substance....
decreases the kinetic energy
increases the kinetic energy
does not change the kinetic energy
- 18. Multiple Choice
Transferring energy out of a substance.....
decreases the kinetic energy
increases the kinetic energy
does not change the kinetic energy
- 19. Multiple Choice
Temperature is....
heat
a measure of what if feels like outside
a measure of the average Kinetic energy of a molecule
- 20. Multiple Choice
If you have a container full of ice and you add enough kinetic energy to create a phase change it is now a...
solid
liquid
gas
plasma
- 21. Multiple Choice
Blake is doing a science experiment with a substance in a sealed jar. At first, the substance’s molecules are moving around each other. What will happen to Blake’s substance if he transfers energy out of the substance and causes a phase change? After the phase change, the substance’s molecules will move . ..
faster and be a gas
faster and be a liquid
slower and be a liquid
slower and be a solid
- 22. Multiple Choice
What would be a reason for a phase change to occur in one substance and not another substance even if both substances began at the same phase and were transferred the same amount of energy?
The molecular attraction of one of the substances was weaker than the other substance causing phase change to occur.
The molecular attraction of both substances were the same causing phase change to occur in one of them.
The molecular attraction of one of the substances was stronger than the other substance causing phase change to occur.
Phase change can not occur in one substance and not the other because they both started in the same phase.
- 23. Multiple Choice
Which options are correct about molecular attraction and freedom of movement?
High molecular attraction = High freedom of movement
Low molecular attraction = Low freedom of movement
Low molecular attraction = High freedom of movement
These two vocabulary words have nothing to do with each other.
- 24. Multiple Choice
In order to increase the speed of a substance's molecules, someone must...
transfer energy into the substance.
transfer energy out of the substance.
lower the temperature of the substance.
keep the temperature the same for the substance.
- 25. Multiple Choice
Kinetic energy can only be added to a substance, never taken away.
true
false
- 26. Multiple ChoiceIf you have a liquid that changes to a gas, explain it's freedom of movement in both phases.molecules move away from each other, then around each othermolecules move in place, then around each othermolecules move around each other, then away from each othermolecules move around each other, then in place
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