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Created page with "==Key Stage 4== ===Meaning=== A '''half equation''' is a type of symbol equation which shows how individual ions gain or lose electrons in..."
==Key Stage 4==
===Meaning===
A '''half equation''' is a type of [[Balanced Symbol Equation|symbol equation]] which shows how individual [[ion]]s gain or lose [[electron]]s in [[ion]]ic [[Chemical Reaction|chemical reactions]].
===About Half Equations===
: In '''half equations''' only one [[ion]] is considered at a time.
: '''Half equations''' use the letter 'e' to represent [[electron]]s.
: '''Half equations''' can be taken from [[Balanced Symbol Equation|balanced symbol equations]].
===Examples===
[[Balanced Symbol Equation]]: 4Li + O<sub>2</sub> → 2Li<sub>2</sub>O
'''Half Equations'''
Li → Li<sup>+</sup> + e<sup>-</sup>
O<sub>2</sub> + 4e<sup>-</sup> → 2O<sup>-2</sup>
===Meaning===
A '''half equation''' is a type of [[Balanced Symbol Equation|symbol equation]] which shows how individual [[ion]]s gain or lose [[electron]]s in [[ion]]ic [[Chemical Reaction|chemical reactions]].
===About Half Equations===
: In '''half equations''' only one [[ion]] is considered at a time.
: '''Half equations''' use the letter 'e' to represent [[electron]]s.
: '''Half equations''' can be taken from [[Balanced Symbol Equation|balanced symbol equations]].
===Examples===
[[Balanced Symbol Equation]]: 4Li + O<sub>2</sub> → 2Li<sub>2</sub>O
'''Half Equations'''
Li → Li<sup>+</sup> + e<sup>-</sup>
O<sub>2</sub> + 4e<sup>-</sup> → 2O<sup>-2</sup>