+**Charles's Law** describes how gases behave when heated. It states that for a fixed amount of an ideal gas at constant [Pressure](/wiki/pressure), its volume is directly proportional to its absolute [Temperature](/wiki/temperature). This fundamental [Gas Law](/wiki/gas_law) explains why a balloon expands when brought into a warm room.
+## See also
+- [Boyle's Law](/wiki/boyle's_law)
+- [Gay-Lussac's Law](/wiki/gay-lussac's_law)
+- [Ideal Gas](/wiki/ideal_gas)
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