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→Key Stage 3
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| style="height:20px; width:600px; text-align:left;" |The [[particle]]s in the [[solid]] [[vibrate]] faster until they [[vibrate]] fast enough that they break the [[bond]]s holding them in fixed positions. The [[particle]]s become able to move past each other but are still touching which makes the [[State of Matter|state]] a [[liquid]].
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==Key Stage 4==
===Meaning===
[[Melting]] is an [[endothermic]] [[Physical Change|physical change]] in which a [[solid]] turns into a [[liquid]].
===About Melting===
: [[Melting]] happens when the [[particle]]s in a [[solid]] break [[bond]]s holding them in fixed positions as they gain [[Potential Energy|potential energy]].
{| class="wikitable"
|[[File:MeltingGraph.png|center|600px]]
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| style="height:20px; width:600px; text-align:left;" |As a [[solid]] is [[heated]] the [[Internal Energy|internal energy]] increases. As the [[solid]] '''melts''' the [[temperature]] of the [[substance]] stays the same.
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