Difference between revisions of "Group 1"
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:[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 ''Alkali metals, pages 56-59, 66, 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 ''Alkali metals, pages 56-59, 66, GCSE Chemistry, CGP, AQA''] | ||
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+ | ====Edexcel==== | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Alkali metals, page 123, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Alkali metals, page 73, GCSE Chemistry; The Revision Guide, CGP, 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 ''Alkali metals, pages 128-129, GCSE Chemistry, Pearson, 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 ''Alkali metals, pages 242-243, GCSE Combined Science, Pearson Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Alkali metals, pages 40, 49, 210-212, GCSE Chemistry, CGP, Edexcel ''] |
Revision as of 11:07, 29 October 2019
Contents
Key Stage 4
Meaning
Group 1 elements, also known as Alkali Metals on the Periodic Table are the elements which have only one electron in their outer shell.
Group 1 elements are shown in light purple at the far left of the Periodic Table. NB: Hydrogen is often shown in Group 1 due to having a single electron in the outer shell however it is not considered an Alkali Metal because it has very few properties in common with Alkali Metals. |
About the Alkali Metals
- Though Hydrogen has one electron in the outer shell it does not behave the same as other elements in group 1 so it is not considered to be an Alkali Metal.
- The Alkali Metals have similar chemical properties because they all have one electron on their outer shell.
- Alkali Metals all produce ions with a +1 relative charge because they lose an electron in chemical reactions.
The Alkali Metals in order from least reactive to most reactive are:
Chemical Properties
- Alkali Metals are all highly reactive and will oxidise quickly in the presence of Oxygen.
- Alkali Metals all react strongly with water to produce metal hydroxides and Hydrogen gas.
- Alkali Metals all produce strong alkalis.
In a chemical reaction the electron in the outer shell is lost.
The reactivity increases as you go down the group because:
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Physical Properties
- Alkali Metals have a low density compared to other metals.
- Alkali Metals are all solid at room temperature but have a low melting point compared to other metals.
- Alkali Metals are soft and can be easily cut.
- Alkali Metals all appear shiny (before they oxidise).
References
AQA
- Alkali metals (Group 1), pages 14-15, GCSE Chemistry, Hodder, AQA
- Alkali metals, page 109, GCSE Combined Science; The Revision Guide, CGP, AQA
- Alkali metals, page 24, GCSE Chemistry; The Revision Guide, CGP, AQA
- Alkali metals, pages 129-31, GCSE Combined Science Trilogy 1, Hodder, AQA
- Alkali metals, pages 26-27, 30-31, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Alkali metals, pages 56-58, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
- Alkali metals, pages 56-59, 66, GCSE Chemistry, CGP, AQA
- Alkali metals, physical properties, page 162, GCSE Combined Science Trilogy 1, Hodder, AQA
Edexcel
- Alkali metals, page 123, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Alkali metals, page 73, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Alkali metals, pages 128-129, GCSE Chemistry, Pearson, Edexcel
- Alkali metals, pages 242-243, GCSE Combined Science, Pearson Edexcel
- Alkali metals, pages 40, 49, 210-212, GCSE Chemistry, CGP, Edexcel