AQA GCSE Combined Science: Synergy key terms

How easily a substance ignites and burns.

A rule for finding the force on a current-carrying conductor in a magnetic field: the first finger shows field direction, the second finger conventional current and the thumb force, with all three at right angles.

A liquid or a gas.

A structure in an ovary within which an egg matures.

A sequence showing feeding relationships and the transfer of energy between organisms.

A network of interconnected food chains showing feeding relationships within a community.

A push or pull acting on an object due to its interaction with another object. Force is measured in newtons (N) and is a vector quantity.

The two forces arising from an interaction: each object exerts a force on the other object.

A mixture designed as a useful product, with ingredients in carefully measured quantities to give the required properties.

The reaction from left to right in a chemical equation as written.

Preserved remains or traces of an organism that lived in the past.

Coal, crude oil or natural gas: fuels formed from the remains of organisms over millions of years.

The collection of fossils that provides evidence of life in the past and changes in organisms over time.

A mixture collected during fractional distillation whose hydrocarbons have similar numbers of carbon atoms and similar boiling points.

Separation of a mixture into fractions using differences in boiling point, through vaporisation and condensation.

A tower in which hydrocarbon vapours separate as they rise through a temperature gradient, with hotter conditions at the bottom and cooler conditions at the top.

A diagram showing the magnitude and direction of the forces acting on one chosen object or system.

Motion under the force of gravity alone, with no other significant forces acting.

The change of a liquid into a solid.

The number of complete cycles each second, measured in hertz (Hz).

Water with low levels of dissolved salts, found in sources such as rivers, lakes and underground stores.

A force that opposes relative movement between surfaces in contact.

Follicle-stimulating hormone: a reproductive hormone that stimulates eggs to mature in the ovaries.

A carbon molecule with a hollow shape, based on rings of carbon atoms.

A substance used to kill fungi or prevent fungal growth and infection.

A reproductive cell containing one chromosome from each pair. Human gametes are egg cells and sperm cells.

High-energy electromagnetic radiation emitted from an atomic nucleus.