what is solid liquid and gas
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Solid is the state in which matter maintains a fixed volume and shape; liquid is the state in which matter adapts to the shape of its container but varies only slightly in volume; and gas is the state in which matter expands to occupy the volume and shape of its container.
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Solids
In the solid state the vibrating particles form a regular pattern. This explains the fixed shape of a solid and why it can’t be compressed or poured.
Liquids
In a liquid the particles still touch their neighbours but they move around, sliding over each other. This is why you can pour, but not compress, a liquid.
Gases
In the gas state, widely-spaced particles move around randomly. This explains why you can compress gases and why they flow.
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