Difference between revisions of "Starch"
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:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10311 ''Starch; test for, page 28, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10311 ''Starch; test for, page 28, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Starch; test for, page 32, GCSE Biology; The Revision Guide, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Starch; test for, page 32, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
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| + | ====Edexcel==== | ||
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| + | :[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 ''Starch, page 100, GCSE Chemistry; The Revision Guide, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Starch, page 124, GCSE Biology, Pearson, 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 ''Starch, pages 16, 17, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782946748/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946748&linkCode=as2&tag=nrjc-21&linkId=a4f0348fc37d0ba1bb52d27f8679581f ''Starch, pages 17-19, GCSE Biology; 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 ''Starch, pages 176, 185, GCSE Chemistry, Pearson, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Starch, pages 39, 41, 44, GCSE Biology, CGP, Edexcel ''] | ||
Revision as of 09:22, 29 November 2019
Contents
Key Stage 3
Meaning
Starch is a complex carbohydrate found in food.
About Starch
- Starch is made of many glucose molecules bonded together.
- Starch is an important part of a balanced diet.
Starch Molecule
 |
| A starch molecule made of many smaller glucose molecules. |
Starch in Foods
 |
 |
 |
 |
| Bread makes part of a balanced diet because it has a lot of starch used for energy. | A balanced diet might contain pasta as it is mostly starch. | Potatoes are full of starch. | Rice is mostly starch with very few other nutrients. |
Testing for Starch
- Starch can be detected using Iodine Solution.
Method
- 1. A small sample of food is placed on a spotting tile.
- 2. A drop of Iodine Solution is added to the food sample.
- 3. If the Iodine Solution turns from orange to blue-black then the food contains starch.
 |
| Iodine Solution is an orange liquid. When the Iodine Solution is added to starch the Iodine Solution turns from orange to blue-black. |
Key Stage 4
Meaning
Starch is a polysaccharide found in food.
About Starch
- Starch is a polymer made of many glucose monomers which join together in a polymerisation reaction.
- Starch is an important part of a balanced diet.
- Starch can be broken down into shorter chains by amylase.
Starch Molecule
|
| A starch molecule made of many smaller glucose molecules. |
Starch in Foods
|
|
|
|
| Bread makes part of a balanced diet because it has a lot of starch used for energy. | A balanced diet might contain pasta as it is mostly starch. | Potatoes are full of starch. | Rice is mostly starch with very few other nutrients. |
Testing for Starch
- Starch can be detected using Iodine Solution.
Method
- 1. A small sample of food is placed on a spotting tile.
- 2. A drop of Iodine Solution is added to the food sample.
- 3. If the Iodine Solution turns from orange to blue-black then the food contains starch.
|
| Iodine Solution is an orange liquid. When the Iodine Solution is added to starch the Iodine Solution turns from orange to blue-black. |
References
AQA
- Starch, page 147, GCSE Combined Science Trilogy; Biology, CGP, AQA
- Starch, page 161, GCSE Biology, CGP, AQA
- Starch, page 193, GCSE Chemistry, Hodder, AQA
- Starch, page 26, GCSE Combined Science; The Revision Guide, CGP, AQA
- Starch, page 29, GCSE Biology; The Revision Guide, CGP, AQA
- Starch, pages 172-173, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Starch, pages 226-7, 252, GCSE Chemistry; Student Book, Collins, AQA
- Starch, pages 46, 128-129, GCSE Biology; Third Edition, Oxford University Press, AQA
- Starch, pages 56, 58,69,98-99, 103, GCSE Biology; Student Book, Collins, AQA
- Starch, test for, page 48, GCSE Combined Science Trilogy 1, Hodder, AQA
- Starch; test for, page 28, GCSE Combined Science; The Revision Guide, CGP, AQA
- Starch; test for, page 32, GCSE Biology; The Revision Guide, CGP, AQA
Edexcel
- Starch, page 100, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Starch, page 124, GCSE Biology, Pearson, Edexcel
- Starch, pages 16, 17, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Starch, pages 17-19, GCSE Biology; The Revision Guide, CGP, Edexcel
- Starch, pages 176, 185, GCSE Chemistry, Pearson, Edexcel
- Starch, pages 39, 41, 44, GCSE Biology, CGP, Edexcel