Primary General Science Glossary

This is a general primary science glossary. For class specific glossaries please go to the specific subjects


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C

Celestial bodies

Objects that are naturally occurring physical entities or structures, that current science has demonstrated to exist in outer space.

Cells

The basic structural and functional unit of all living organisms. Cells can exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants, animals or human beings.

Centre of mass

The point at which the entire mass of a body can be considered to be concentrated. Centre of mass / gravity The point at which the entire mass of a body can be considered to be concentrated.

Centrifugal force

Centrifugal force is the effect that tends to move an object away from the centre of a circle it is rotating about (a consequence of inertia).

Cereal

A breakfast food prepared from grain

Chemical element

Any of the more than 100 known substances that cannot be separated into simpler substances and that individually or in combination constitute all matter.

Chemical indicator

Any substance used to classify another, often by changing colour.

Chemical reaction

The formation of new substances from one or more reactants, by breaking existing electrical bonds and creating others.

Chlorophyll

A green-coloured compound or ‘pigment’ in plants that converts radiant energy to chemical energy through the process of photosynthesis.

Chromatography

An analytical chemistry technique for separating and identifying mixtures that are or can be coloured, especially pigments.

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