IGCSE Glossary

There are 25 entries in this glossary.
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Glossaries

Term Definition
suspension
Glossaries - GCSE chemistry
Glossaries Description -

In chemistry, a suspension is a heterogeneous mixture that contains solid particles sufficiently large for sedimentation. The particles may be visible to the naked eye, usually must be larger than 1 micrometer, and will eventually settle.

Author - georgie
Hits - 314
Solvent
Glossaries - GCSE chemistry
Glossaries Description -

A substance ( usually a liquid like water) which will dissolve another substance

Author - David Fowkes
Hits - 509
solution
Glossaries - GCSE chemistry
Glossaries Description -

A solution is a liquid mixture in which the minor component (the solute) is distributed within the major components (the solvent)

Author - David Fowkes
Hits - 479
solute
Glossaries - GCSE chemistry
Glossaries Description -

The minor component in a solution, dissolved in the solvent.

Author - georgie
Hits - 466
soluble
Glossaries - GCSE chemistry
Glossaries Description -

A substance is soluble when is can dissolve in another substance ( the solvent)

Author - georgie
Hits - 461
Synonyms - dissolvable
soluble
Glossaries - GCSE chemistry
Glossaries Description -

A substance able to be dissolved in a liquid.

Author - georgie
Synonyms - disintegrable
solubility
Glossaries - GCSE chemistry
Glossaries Description -

Solubility is the measure of how much solute can be added to a solvent until it becomes a saturated solution. The solubility is measured in grams of solute per hundred grams of solvent.

Author - georgie
Hits - 451
saturated solution
Glossaries - GCSE chemistry
Glossaries Description -

A solution becomes a saturated solution when it has the maximum concentration of a solute dissolved in a solvent. After it is saturated any additional solute will not dissolve into the saturated solution.

Author - georgie
Hits - 540
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 - 188
Period
Glossaries - GCSE chemistry
Glossaries Description -

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

Author - georgie
Hits - 258
metal
Glossaries - GCSE chemistry
Glossaries Description -

More than 70% of the elements of the periodic table are metals.  All metals conduct an electric current and react by losing electrons. Metals  therefore form positively charged ions when they react.

The structure of metals is often described as a lattice of positively charged ions in a "sea" of delocalised electrons

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Author - David Fowkes
Hits - 547
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.

methane

Author - David Fowkes
Hits - 561
hydrocarbon
Glossaries - GCSE chemistry
Glossaries Description -

Any molecule composed only of carbon and hydrogen atoms.

Author - georgie
Hits - 3
Group
Glossaries - GCSE chemistry
Glossaries Description -

Each vertical column in the periodic table is given a number called the group number. The group number shows the number of electrons in the outermost shell of the atom.wpab7ac07f 06

Author - georgie
Hits - 293
Group
Glossaries - GCSE chemistry
Glossaries Description -

A vertical column in the periodic table. The group number is equal to the number of electrons in the outermost shell of the atom.

Author - David Fowkes
Hits - 2