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*[[Combustion|Burning]]
*[[Vinegar and Bicarbonate of Soda|Adding Bicarbonate of Soda to Vinegar]].
==Key Stage 3==
===Meaning===
A [[Chemical Reaction]] is when the [[atom]]s in [[molecule]]s break their [[Chemical Bond|bonds]] and form new [[Chemical Bond|bonds]], usually with other [[atom]]s.
===About Chemical Reactions===