AILDEN
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hi there, I had a question about states of matter in the chemistry course "As a substance changes from one state to another, more energy is supplied but no temperature change will occur." why doesn't the total temperature change? it's a bit confusing as to when a solid(ice) melts into water(liquid), the temperature would increase
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2021medic
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(Original post by AILDEN)
hi there, I had a question about states of matter in the chemistry course "As a substance changes from one state to another, more energy is supplied but no temperature change will occur." why doesn't the total temperature change? it's a bit confusing as to when a solid(ice) melts into water(liquid), the temperature would increase
There’s a point (melting/boiling points) at which the energy absorbed is not put in the substance’s thermal stores (which increases temperature) but in the potential stores (which causes change of state)...
The increase in potential means that the particles can move apart (boiling point) or break out of the regular arrangement (melting point)...
This is just temporary and after reaching this point, the temperature will begin to increase again.
Have a look at a graph of this... there’s a kink/small stationary point in the graph when the temperature stops increasing for a bit.

Hope that helps (this is NOT an exam answer tho!)

Also you’ll probably do this in more detail at some point if ur doing gcse physics (triple science)
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