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Topic 2
Solids liquids and gases
| Question | Answer |
|---|---|
| What is a crystalline solid? | A solid with particles that form a pattern and melt at a particular temperature |
| What is an amorphous solid? | A solid that gets softer as it is heated and doesn't melt at a particular temperature |
| Do liquids with a high viscosity flow slowly or quickly? | slowly, for example honey |
| Do liquids with a low viscosity flow slowly or quickly? | quickly, for example water |
| How are the particles in an amorphous solid arranged? | in no regular pattern |
| What is surface tension? | An inward force or pull among molecules in a liquid that bring the molecules on the surface closer together |
| What affect does pressure have on a liquids boiling point? | It requires a higher temperature to boil, the temperature of the liquid will remain constant while it boils |
| Why is it that with gases like helium and oxygen you can put a large volume in a small tank? | Because gases can be compressed |
| What is vaporization? | The change in state from a liquid to a gas. |
| How does vaporization occur? | Particles in a liquid gain enough energy as the temperature increases that the particles can move independently and away from each other. |
| What is an example of sublimation? | Dry ice changes directly from a solid to carbon dioxide gas |
| If a solid element can hit it's melting point, become a liquid, remove the heat source and it returns to a solid, what do you know? | The freezing point and melting point are the same for the element |
| What happens to thermal energy when a temperature increases? | Thermal energy increases |
| What happens to thermal energy if the temperature decreases? | Thermal energy decreases |
| What happens to ice if the thermal energy increases? | It melts |
| A decreased temperature has what affect a basketball? | The particles inside the ball slow down and it loses pressure |
| As temperature increases but pressure remains constant, what happens to the volume of a gas? | It increases |
| True or false: gas pressure and volume are indirectly proportional. | False, they are proportional |
| What is inverse proportionality? | When one variable increases the other variable decreases |
| If temperature remains constant what happens to the volume of a gas when the pressure increases? | The volume decreases |
Created by:
llinares
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