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- 1. Poll
Do you think you'll win?
YES!!
Yes.
Um, I guess...
No.
- 2. Fill in the Blank
When a solid reaches its melting point, it becomes a ____.
- 3. Multiple Choice
Check all the different possible changes in states of matter.
Melting
Freezing
Boiling
Sublimating
Parjulating
- 4. Multiple Choice
Solid to a gas is ____.
Melting
Sublimation
Deposition
Freezing
- 5. Multiple Choice
Gas to a solid.
Melting
Freezing
Deposition
Boiling
- 6. Multiple Choice
What states of matter exist? Choose all that apply. (This is HARD)
Jahn-Teller Metal
Rydberg-Polaron
Quantum-Spin Liquid
Wlaz-Bund Azeloid
Time crystals
- 7. Poll
What is your favorite state of matter?
Solid
Liquid
Gas
Plasma
- 8. Fill in the Blank
Plasma can be found in ___. (Hint: A place in space)
- 9. Multiple Choice
The planet Venus is surrounded by a thick layer of gases. In fact, the atmospheric pressure on Venus is over 90 times greater than the atmospheric pressure on Earth. Which statements are true about boiling water on Venus? Choose the two statements that apply.
Water will boil at a higher temperature on Venus than on Earth.
Water will boil at a lower temperature on Venus than on Earth.
The temperature of water will remain constant while it boils.
The temperature of water will increase as it boils.
- 10. Fill in the Blank
People who have certain lung diseases, such as emphysema or lung cancer, often have to use oxygen from tanks. A large volume of oxygen can be put into a small tank because oxygen is a gas, and gases can be ____ .
- 11. Multiple Choice
Acetone is a liquid at room temperature. Examine the graph showing what happens when liquid acetone becomes a gas.
From the time it started heating, how many minutes did all of the liquid acetone take to become a gas?
10
30
40
56
- 12. Open Ended
Acetone is a liquid at room temperature. Examine the graph showing what happens when liquid acetone becomes a gas.
Describe the behavior of the acetone particles during each phase represented by the diagonal and horizontal portions of the graph.
- 13. Multiple Choice
Min was writing about changes in the state of matter for a research paper. Which of the following changes might she include as examples of sublimation? Choose the two statements that apply.
Clothing is hung outside on a day when the temperature is below the freezing point of water. The clothes dry, even though they freeze first.
An ice cube melts on the floor, and then it evaporates.
Bromine is a reddish-brown, liquid element. In a closed container, a reddish-brown gas exists above the surface of the bromine.
Dry ice changes directly to carbon dioxide gas.
- 14. Multiple Choice
Would you feel like a superhero if you could melt metal just by holding it? The element gallium is a solid at room temperature, but it will reach its melting point and melt if you hold it in your hand. If you pour the liquid gallium into a container at room temperature, it will become solid again. How do the melting point and the freezing point of gallium compare to each other?
The freezing point of gallium is higher than its melting point.
The freezing point of gallium is lower than its melting point.
The freezing point of gallium equals its melting point.
Both the freezing point and the melting point of gallium vary.
- 15. Multiple Choice
How does water cool off?
The energy and temperature decrease.
Only the energy decreases.
Only the thermal energy increases.
The thermal energy and temperature increases.
- 16. Open Ended
What happens when water freezes? Explain in terms of thermal energy.
- 17. Multiple Choice
You may have seen water dripping from an air conditioner. Where does the water come from?
It leaks from the refrigerant coil.
It is rainwater that drains out of the air conditioner.
It comes from ice melting in the air conditioner.
It condenses from moisture from the outside air.
- 18. Multiple Choice
What happens to the molecules of water vapor in the air when the water vapor passes through the air conditioner?
The thermal energy of the water decreases, and the water molecules move farther apart.
The thermal energy of the water decreases, and the water molecules move closer together.
The thermal energy of the water increases, and the water molecules move farther apart.
The thermal energy of the water increases, and the water molecules move closer together.
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