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- 1. Multiple Choice
Temperature is a measure of how much the atoms in a substance are moving. Why is a substance hotter in the gas state than in the liquid state?
Atoms can move to change a liquid’s shape.
Atoms can be compressed when in the gas state.
Atoms move more freely in the gas state.
Atoms move in the gas state but not the liquid state.
- 2. Multiple Choice
When frozen ice cream melts, the atoms in the ice cream
move further apart.
move closer together.
become ions.
become electrons.
- 3. Multiple Choice
A substance will take on the shape of an open container if it is a
liquid
plasma
gas
solid
- 4. Multiple Choice
A mass of charged ions that can expand out of an open container would be considered a
gas
solid
liquid
plasma
- 5. Multiple Choice
If a substance containing neutral atoms can be compressed a lot so that the atoms move closer together and the space between them decreases substantially, the substance is most likely a
gas
solid
liquid
plasma
- 6. Multiple Choice
If a substance containing charged ions and electrons can be compressed so that the particles have less space between them, the substance is a
gas
plasma
solid
liquid
- 7. Multiple Choice
The dots in these cylinders represent the shape and density of the particles in the different states of matter. Each dot represents a charged ion, so when two ions are together in a pair, they represent a neutral atom. Which container most likely contains a liquid?
A
B
C
D
- 8. Multiple Choice
The dots in these cylinders represent the shape and density of the particles in the different states of matter. Each dot represents a charged ion, so when two ions are together in pair, they represent a neutral atom. Which container most likely contains a plasma?
A
B
C
D
- 9. Multiple Choice
When atoms get more and more energy, they can ionize. What can happen to a gas as more energy is added to its atoms?
As the atoms move faster, the gas can change into a plasma.
As the atoms move slower, the gas can change into a liquid.
As the atoms move faster, the gas can change into a liquid.
As the atoms move slower, the gas can change into a plasma.
- 10. Multiple Choice
A floating balloon can be formed when the substance helium is released from a compressed container into a flat rubber balloon. Then, the decompressed helium atoms expand and float up, making the rubber balloon expand around them and float with them. What is helium’s state when it does this?
liquid
solid
gas
plasma
- 11. Multiple Choice
Why are the marked lines on a beaker like this useful for measuring the volume of a liquid?
A liquid maintains its shape in the beaker, so the beaker can measure the liquid’s height, and the height cubed equals the liquid’s volume.
A liquid conforms to the circular area of the beaker, and this area multiplied by the liquid’s height equals its volume.
A liquid is usually made of neutral atoms, and the beaker does not add or remove energy from the atoms, thereby preventing ionization.
A liquid is compressible, but since the beaker does not have a top on it, the liquid will maintain its same volume.
- 12. Multiple Choice
Smoke is a mixture of solid, liquid, and gas particles. Although the solid particles make the smoke visible, most of the smoke mixture is gas. Which visible quality of smoke shows that it contains a lot of gas influencing the other particles?
The shade of the color is different in different places.
Smoke usually has an unpleasant smell.
Smoke rises out of very hot substances.
The shape of the smoke changes very easily.
- 13. Multiple Choice
As more and more energy is added to the atoms of a solid plastic, the plastic will first change into
a harder solid.
a thick liquid.
a free-moving gas.
a volatile plasma.
- 14. Multiple Choice
What is one difference between water and ice?
Ice is more compressed than water.
Ice molecules have more charge than water molecules.
Water has a lower temperature than ice.
Water molecules move more easily than ice molecules.
- 15. Multiple Choice
Of the four states of matter, which has particles that are the most tightly packed together?
liquid
solid
gas
plasma
- 16. Multiple Choice
Compressed gas has many uses. It can be held in a tank like this with a valve that can be opened to safely release small amounts of gas at a time. The valve usually releases the gas into a tube through which it travels to another container. It is only safe to allow small amounts of compressed gas out at a time. What is the most likely reason it is dangerous to break open a compressed gas tank?
Any gas would react with whatever air is around it to cause fire and electric bolts when released.
A gas would be at such a cold temperature when it is compressed that it would cause everything to freeze around it.
A compressed gas would expand very quickly if released uncontrollably and would hit nearby people or objects very hard.
Any compressed matter will change the shape of its container, so if the gas were released into a room, it would change the shape of the walls.
- 17. Multiple Choice
When a substance freezes, its atoms become locked in place so they do not move from one position to another. Therefore, any substance that is frozen is a
plasma
gas
liquid
solid
- 18. Multiple Choice
Why can the volume of a sample of plasma change when the substance is moved from one container to another?
Plasma is made of charged ions and electrons, so they interact differently in different places.
Plasma can have lots of space between its particles, so it naturally expands and compresses.
Plasma is made of neutral atoms that can split into separate ions and electrons when placed in a new container.
Plasma can change between a rigid shape and a free-moving form, so it will have different volumes in different containers.
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