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==Key Stage 3==
===Meaning===
[[Glass]] is a [[hardness|hard]], [[brittle]] and [[transparent]] [[solid]] (at [[Room Temperature|room temperature]]) made from [[Silicon Dioxide]].
===About Glass===
: [[Glass]] is made by [[melting]] [[sand]] and allowing it to [[Freezing|freeze]] into a new shape.
: [[Glass]] is used for windows because it is [[transparent]].
: [[Glass]] is brittle which means it doesn't not change shape easily and will break before bending.
===Meaning===
[[File:GlassGiantCovalentStructure.png|right|300px|thumb|This [[diagram]] shows the [[Giant Covalent Structure|giant covalent structure]] of [[glass]].]]
[[Glass]] is a [[Giant Covalent Structure]] made from [[Silicon Dioxide]].
===About Glass===
Hard - So it doesn't get scratched.
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===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Glass, page 226, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851346/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851346&linkCode=as2&tag=nrjc-21&linkId=3ac654f4b0da781c49c855a1af4c92ea ''Glass, page 264, GCSE Chemistry, Hodder, 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 ''Glass, page 280, GCSE Chemistry, CGP, AQA '']
====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 ''Glass, page 202, GCSE Chemistry, Pearson, Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Glass, pages 220-222, 227, Gateway GCSE Chemistry, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Glass, pages 85, 86, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR '']