Difference between revisions of "Chemical Change"
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: '''Chemical changes''' [[product|produce]] new [[chemical]]s which have different [[Physical Property|physical]] and [[Chemical Property|chemical properties]] from the [[reactant]]s. | : '''Chemical changes''' [[product|produce]] new [[chemical]]s which have different [[Physical Property|physical]] and [[Chemical Property|chemical properties]] from the [[reactant]]s. | ||
: In a '''chemical change''' the [[atom]]s in [[molecule]]s are rearranged to form new [[molecule]]s. | : In a '''chemical change''' the [[atom]]s in [[molecule]]s are rearranged to form new [[molecule]]s. | ||
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| + | ===References=== | ||
| + | ====Edexcel==== | ||
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| + | :[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Chemical changes, page 182, GCSE Physics, 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 ''Chemical changes, page 414, GCSE Combined Science, Pearson 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 ''Chemical changes, pages 12, 35, GCSE Chemistry; The Revision Guide, CGP, 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 ''Chemical changes, pages 75, 98, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
Latest revision as of 10:37, 16 November 2019
Contents
Key Stage 3
Meaning
A chemical change is a change that results in new chemicals being formed.
About Chemical Changes
- Chemical changes are usually irreversible. However, some can be reversed.
- Chemical changes produce new chemicals which have different physical and chemical properties from the reactants.
Examples
- Cooking food involves several chemical changes. Baking a cake and toasting bread causes chemical reactions that are used to change the texture and flavour of the food.
Key Stage 4
Meaning
A chemical change is a change that results in new chemicals being formed.
About Chemical Changes
- Chemical changes are usually irreversible. However, some can be reversed.
- Chemical changes produce new chemicals which have different physical and chemical properties from the reactants.
- In a chemical change the atoms in molecules are rearranged to form new molecules.