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Created page with "==Key Stage 3== ===Meaning=== An endothermic process is one takes in energy. This usually causes surroundings to decrease in temperature. ===About Exothermic Proc..."
==Key Stage 3==
===Meaning===
An [[endothermic]] process is one takes in [[energy]]. This usually causes surroundings to decrease in [[temperature]].
===About Exothermic Processes===
: A few [[Chemical Reaction|chemical reactions]] are [[endothermic]] with means they need [[energy]] from the environment and this is observed by a decrease in [[temperature]].
{| class="wikitable"
|-
|[[File:EndothermicSketchGraphKS3.png|center|500px]]
|-
| style="height:20px; width:500px; text-align:center;" |The [[energy]] stored in the [[reactant]]s less than the [[energy]] stored in the [[product]]s. This means the [[Chemical Reaction|reaction]] must take in [[energy]] from the environment which causes the surroundings to decrease in [[temperature]].
|}
: [[Melting]], [[Evaporating]] and [[Subliming]] are [[endothermic]] changes because they need [[energy]] to happen. The [[material]] has more [[energy]] at the end than it did the beginning. However, there is usually no decrease in [[temperature]] because the [[material]] is usually being heated to [[State Change|change state]].
: [[Dissolve|Dissolving]] is an [[endothermic]] process as [[energy]] is needed to break the [[bond]]s in the [[solid]] [[solute]] to [[dissolve]]. This causes the [[solution]] to decrease in [[temperature]] while the [[solute]] is [[dissolve|dissolving]].
===Meaning===
An [[endothermic]] process is one takes in [[energy]]. This usually causes surroundings to decrease in [[temperature]].
===About Exothermic Processes===
: A few [[Chemical Reaction|chemical reactions]] are [[endothermic]] with means they need [[energy]] from the environment and this is observed by a decrease in [[temperature]].
{| class="wikitable"
|-
|[[File:EndothermicSketchGraphKS3.png|center|500px]]
|-
| style="height:20px; width:500px; text-align:center;" |The [[energy]] stored in the [[reactant]]s less than the [[energy]] stored in the [[product]]s. This means the [[Chemical Reaction|reaction]] must take in [[energy]] from the environment which causes the surroundings to decrease in [[temperature]].
|}
: [[Melting]], [[Evaporating]] and [[Subliming]] are [[endothermic]] changes because they need [[energy]] to happen. The [[material]] has more [[energy]] at the end than it did the beginning. However, there is usually no decrease in [[temperature]] because the [[material]] is usually being heated to [[State Change|change state]].
: [[Dissolve|Dissolving]] is an [[endothermic]] process as [[energy]] is needed to break the [[bond]]s in the [[solid]] [[solute]] to [[dissolve]]. This causes the [[solution]] to decrease in [[temperature]] while the [[solute]] is [[dissolve|dissolving]].