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IGCSE Glossary

There are 7 entries in this glossary.
Search for glossary terms (regular expression allowed)

Glossaries

Term Main definition
Period
Glossaries - GCSE chemistry
Glossaries Description -

The period number in the periodic table shows how many shells are occupied by electrons.

Author - georgie
Hits - 2829
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

Author - Vasyl
Hits - 1017
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.

Author - Vasyl
Hits - 1044
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.

Author - Vasyl
Hits - 1002
potassium sulfate
Glossaries - GCSE chemistry
Glossaries Description -

potassium sulfate

Author - David Fowkes
Hits - 2631
protists
Glossaries - GCSE chemistry
Glossaries Description -

protist  is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus

Author - Vasyl
Hits - 916
Proton Number
Glossaries - GCSE chemistry
Glossaries Description -

The number of protons in the nucleus of an atom. Also known as the atomic number


atomic number

Author - David Fowkes
Hits - 2727

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