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| We should look at the phase changes of mercury | |
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| ok if we freeze mercury then it becomes a solid and mercury freezing point is about -39c | |
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| that means that is forming into solid from a liquid but it has no exo or endothermic reactions | |
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| oh ok now we should see that the melting point of mercury is about -38c it then becomes a liquid and that means it is endothemic and is taking in heat | |
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| yeah which means that the particles in a liquid are starting to speed up but, if we boil the liquid at 356c it will give off a gas | |
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| and that means that it is exothemic because it is giving off heat, and the particles in gas move very fast | |
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