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Explain why almost all solids are denser than their liquid states by describing what is occurring at the molecular level?
Wiki User
∙ 14y ago
The state that a material is in (solid, liquid, gas) is determined essentially by the amount of space between the atoms. The less space, the more locked in place, or solid, something is. When you heat something up it causes the thing to expand and therefore increases the ability for atoms to move turning first into a liquid (melting) then a gas (evaporating).
At room temperature, most common items are stable as a liquid solid or gas, and it usually takes significant increases or decreases in the ambient temperature to change the state of matter, so solids tend to stay solids, gases stay gases and liquids stay liquid. There are exceptions to this, but it works as a general rule.
Water is one of the few liquids that actually expands when it solidifies because the polar water molecules link up with air molecules as it freezes.
Wiki User
∙ 14y ago
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