IGCSE Glossary
There are 73 entries in this glossary.Glossaries
Term | Main definition |
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Louis Pasteur |
Glossaries - GCSE chemistry
Glossaries Description -
Louis Pasteur; 27 December 1822 – 28 September 1895) was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. His research in chemistry led to remarkable breakthroughs in the understanding of the causes and preventions of diseases, which laid down the foundations of hygiene, public health and much of modern medicine.
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Lithosphere |
Glossaries - GCSE chemistry
Glossaries Description -
A lithosphere is the rigid, outermost shell of a terrestrial-type planet or natural satellite. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands of years or greater. The crust and upper mantle are distinguished on the basis of chemistry and mineralogy.
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Hydrosphere |
Glossaries - GCSE chemistry
Glossaries Description -
The hydrosphere is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite. Although Earth's hydrosphere has been around for about 4 billion years, it continues to change in shape.
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Hydrocarbon |
Glossaries - GCSE chemistry
Glossaries Description -
A hydrocarbon is a compound whose molecules are made up of atoms of carbon and hydrogen only. The image shows a model of a molecule of methane - the simplest hydrocarbon.
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hydrocarbon |
Glossaries - GCSE chemistry
Glossaries Description -
Any molecule composed only of carbon and hydrogen atoms.
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Glycoprotein |
Glossaries - GCSE chemistry
Glossaries Description -
This is a molecule made of both a protein and a carbohydrate. They are commonly found attached to the outside of a cell membrane.
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functional group |
Glossaries - GCSE chemistry
Glossaries Description -
A grouping of atoms which is responsible for the specific properties of a molecule
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flammable |
Glossaries - GCSE chemistry
Glossaries Description -
easily set on fire
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exothermic |
Glossaries - GCSE chemistry
Glossaries Description -
A chemical reaction that releases energy through light or heat.
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Ethanol |
Glossaries - GCSE chemistry
Glossaries Description -
Ethanol is the second member of the homologous series known as the alcohols. It has the formula C2H5OH It is the "alcohol" in alcoholic drinks
Hits - 2584 Synonyms -
Ethyl Alcohol |
Enzyme |
Glossaries - GCSE chemistry
Glossaries Description -
An enzyme is a type of protein that speeds up the rate of chemical reactions.
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Enzyme |
Glossaries - GCSE chemistry
Glossaries Description -
An enzyme is a type of protein that speeds up the rate of chemical reactions. |
entry |
Glossaries - GCSE chemistry
Glossaries Description -
a way in
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empirical formula |
Glossaries - GCSE chemistry
Glossaries Description -
The empirical formula of a substance gives the simplest whole number ratio of atoms in that substance. For example glucose has the molecular formula C6H12O6 but its empirical fomula is CH2O
Hits - 3041 Synonyms -
simplest formula |
element |
Glossaries - GCSE chemistry
Glossaries Description -
All the atoms in an element have the same atomic number. The elements are listed in the periodic table in order of increasing atomic number.
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