Difference between revisions of "Double Bond"
Line 26: | Line 26: | ||
:[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Double bonds, pages 230-237, GCSE Chemistry, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Double bonds, pages 230-237, GCSE Chemistry, CGP, AQA ''] | ||
:[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d107 ''Double bonds, pages 78-80, GCSE Chemistry; The Revision Guide, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d107 ''Double bonds, pages 78-80, GCSE Chemistry; The Revision Guide, CGP, AQA ''] | ||
+ | |||
+ | ====Edexcel==== | ||
+ | |||
+ | :[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Double bonds, page 184, GCSE Combined Science, Pearson Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Double bonds, page 40, GCSE Chemistry, Pearson, Edexcel ''] |
Revision as of 20:40, 17 November 2019
Contents
Key Stage 4
Meaning
A double bond is a chemical bond in which two electrons are shared or transferred from the outer shell between two atoms.
About Double Bonds
- In covalent bonds a double bond means two electrons from the outer shell of an atom are shared with another atom.
- In ionic bonds a double bond means one of the elements has gained or lost two electrons from/to one other element.
Examples
In this structural diagram a double bond is shown between two Sulphur atoms. | In this dot and cross diagram the two Oxygen atoms in an Oxygen molecule are shown to each share two electrons in a double bond. | In this 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. |
References
AQA
- Double bonds, pages 154-155, 158-159, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Double bonds, pages 230-237, GCSE Chemistry, CGP, AQA
- Double bonds, pages 78-80, GCSE Chemistry; The Revision Guide, CGP, AQA