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| Question | Answer |
| Which theory describes the arrangement and movement of particles in solids, liquids and gases? | Kinetic theory |
| In which state of matter are the particles mostly touching but arranged in a random way? | Liquid |
| In which state of matter do the particles have the most energy? | In a gas |
| Why can liquids not be compressed easily? | The particles are closely packed |
| Why do solids have a fixed shape? | particles in a solid are fixed in place in a regular arrangement, solids have a fixed shape |
| What is the name of the change when a liquid becomes a solid? | Whenever a liquid cools and becomes a solid this is described as freezing |
| What is sublimation? | A solid sublimes when it turns straight into a gas, without becoming a liquid first. |
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