IGCSE Glossary
There are 7 entries in this glossary.Glossaries
Term | Main definition |
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Period |
Glossaries - GCSE chemistry
Glossaries Description -
The period number in the periodic table shows how many shells are occupied by electrons.
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petrol |
Glossaries - GCSE chemistry
Glossaries Description -
A transparent, crude oil-derived flammable hydrocarbon liquid that is used primarily as a fuel in most spark-ignited internal combustion engines. Density approximately 0.726 kg/l
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Polypeptides |
Glossaries - GCSE chemistry
Glossaries Description -
A chain of amino acids linked by peptide bonds. Proteins are made of one or more folded polypeptide chains.
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Polysaccharides |
Glossaries - GCSE chemistry
Glossaries Description -
These are polymers made of smaller carbohydrate molecules. An example is starch, which is made of lots of glucose molecules joined together in a chain.
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potassium sulfate |
Glossaries - GCSE chemistry
Glossaries Description -
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protists |
Glossaries - GCSE chemistry
Glossaries Description -
A protist is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus
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Proton Number |
Glossaries - GCSE chemistry
Glossaries Description -
The number of protons in the nucleus of an atom. Also known as the atomic number
Hits - 2764
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