give two example of changes in which energy is given out
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two examples of changes in which energy is given out are
1.when water vapour condenses to water
2.when water freezes to ice.
1.when water vapour condenses to water
2.when water freezes to ice.
doshi:
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candle wax melts on heating and changes to solid state on cooling
when water turns to ice and again turns to water upon cooling
when water turns to ice and again turns to water upon cooling
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