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Created page with "==Key Stage 4== ===Meaning=== A '''double bond''' is a chemical bond in which two electrons are shared or transferred from the [[Outer Shell|outer shell]..."
==Key Stage 4==
===Meaning===
A '''double bond''' is a [[Chemical Bond|chemical bond]] in which two [[electron]]s are shared or transferred from the [[Outer Shell|outer shell]] between two [[atom]]s.
===About Double Bonds===
: In [[Covalent Bond|covalent bonds]] a '''double bond''' means two [[electron]]s from the [[Outer Shell|outer shell]] of an [[atom]] are shared with another [[atom]].
: In [[Ionic Bond|ionic bonds]] a '''double bond''' means one of the [[element]]s has gained or lost two [[electron]]s from/to one other [[element]].
===Examples===
{| class="wikitable"
|-
|[[File:Sulphur-Sulphur.png|center|200px]]
|[[File:OxygenDotandCrossDiagram.png|center|200px]]
|[[File:BallandStickCarbonDioxide.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |In this [[Structural Diagram|structural diagram]] a '''double bond''' is shown between two [[Sulphur]] [[atom]]s.
| style="height:20px; width:200px; text-align:center;" |In this [[Dot and Cross Diagram|dot and cross diagram]] the two [[Oxygen]] [[atom]]s in an [[Oxygen]] [[molecule]] are shown to each share two [[electron]]s in a '''double bond'''.
| style="height:20px; width:200px; text-align:center;" |In this [[Ball and Stick Model|ball and stick model]] of [[Carbon Dioxide]] the [[Carbon]] is shown to share two [[electron]] (shown by the two sticks) with each [[Oxygen]] [[atom]] forming two '''double bonds'''.
|}
===Meaning===
A '''double bond''' is a [[Chemical Bond|chemical bond]] in which two [[electron]]s are shared or transferred from the [[Outer Shell|outer shell]] between two [[atom]]s.
===About Double Bonds===
: In [[Covalent Bond|covalent bonds]] a '''double bond''' means two [[electron]]s from the [[Outer Shell|outer shell]] of an [[atom]] are shared with another [[atom]].
: In [[Ionic Bond|ionic bonds]] a '''double bond''' means one of the [[element]]s has gained or lost two [[electron]]s from/to one other [[element]].
===Examples===
{| class="wikitable"
|-
|[[File:Sulphur-Sulphur.png|center|200px]]
|[[File:OxygenDotandCrossDiagram.png|center|200px]]
|[[File:BallandStickCarbonDioxide.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |In this [[Structural Diagram|structural diagram]] a '''double bond''' is shown between two [[Sulphur]] [[atom]]s.
| style="height:20px; width:200px; text-align:center;" |In this [[Dot and Cross Diagram|dot and cross diagram]] the two [[Oxygen]] [[atom]]s in an [[Oxygen]] [[molecule]] are shown to each share two [[electron]]s in a '''double bond'''.
| style="height:20px; width:200px; text-align:center;" |In this [[Ball and Stick Model|ball and stick model]] of [[Carbon Dioxide]] the [[Carbon]] is shown to share two [[electron]] (shown by the two sticks) with each [[Oxygen]] [[atom]] forming two '''double bonds'''.
|}