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Properties of Matter
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What causes melting?
Heat.
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Describe the particle model of a gas.
Particles are spaced far apart. This means gas can have any shape. It can also be squashed easily.
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When something goes from SOLID to GAS, do the molecules get closer together or farther apart?
Farther Apart
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What are the three states of matter?
solid, liquid, gas.
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THEY HAVE THEIR OWN SHAPE, MASS AND VOLUME
Solid
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THEY TAKE THE SHAPE OF THEIR CONTAINER
LIQUIDS
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THEY HAVE MASS AND THEY CAN FLOW AND CAN BE COMPRESSED.
Gases
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What is freezing?
When a liquid cools and it changes into a solid.
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Give 2 daily activities that use evaporation.
evaporation. Drying clothes, sweeping wet floor, drying puddle, cooling down the hot drinks, ironing clothes, drying wet hair, making salt, etc.
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THEY HAVE NO VOLUME OR FIXED SHAPE
Gas
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Describe the particle model of a solid.
Particles are tightly packed in fixed positions. This makes it difficult for a solid to change shape.
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Describe the particle model of a liquid.
Particles are close together but can slide past each other and change places. This means liquids can change shape easily.
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Is this a solid, liquid, or gas?
Solid
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At what temperature does the evaporation happen?
High Temperature
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Evaporation is a change from _____ state to _____ state.
Liquid to gas
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