19,879
edits
Changes
no edit summary
: [[Energy]] is released from the '''chemical potential store''' in an [[exothermic]] [[Chemical Reaction|reaction]].
: [[Energy]] is added to the '''chemical potential store''' in an [[endothermic]] [[Chemical Reaction|reaction]].
===Examples===
{| class="wikitable"
|-
|[[File:Fire.png|center|200px]]
|[[File:MagnesiumRibbon.png|center|200px]]
|[[File:ElectricalCell.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |During [[combustion]] of [[wood]] [[energy]] is released from the '''chemical potential energy store''' of the [[fuel]] and [[oxygen]].
| style="height:20px; width:200px; text-align:center;" |A [[mixture]] of [[Magnesium]] and [[Oxygen]] have a store of '''chemical potential energy'''.
| style="height:20px; width:200px; text-align:center;" |An [[Electrical Cell|elecrical cell]] has a store of '''chemical potential energy''' which can be [[Energy Transfer|transferred]] by [[electricity]].
|}
==Key Stage 4==
===Meaning===
The '''chemical potential energy store''' is the [[Energy Store|energy store]] associated with [[chemical]]s and their ability to [[Chemical Reaction|react]] with one another, releasing [[energy]].
===About Chemical Potential Energy===
: '''Chemical Potential Energy''' is linked to the [[Potential Energy|potential energy]] of the [[Chemical Bond|chemical bonds]] in the [[reactant]]s and the [[product]]s.
: The '''chemical potential energy store''' of an [[object]] is related to three important factors in a [[Chemical Reaction|chemical reaction]]:
*The [[mass]] of [[substance]]s that will [[react]]. The more [[mass]] of [[Reaction Mixture|reaction mixture]] the greater the '''chemical potential energy store'''.
*The strength of the [[Chemical Bond|chemical bonds]] in the [[reactant]]s.
*The strength of the [[Chemical Bond|chemical bonds]] in the [[product]]s.
The greater the difference between the strength of [[Chemical Bond|bonds]] in [[reactant]]s and [[product]]s the greater the change in '''chemical potential energy''' during a [[Chemical Reaction|chemical reaction]].
: There is no single equation for the '''chemical potential energy store''' as it depends on the [[chemical]]s which are [[Chemical Reaction|reacting]] with one another.