Science CAT revision

2026 CAT revision science

Chemical Change

When a substance transforms into a entirely new substance.

Physical Change

The state of a substance without changing its chemical form.

Elements

substances made up of only one type of atom.

Molecule

2 or more atoms joined by chemical bonds.

Mixtures

Substances which are combined without being chemically bonded.

Compound

A substance made from two or more elements.

Matter

Everything

Atoms

The smallest neutral particle that matter can be broken down to.

Ion

Charged particles formed from atoms that can be positive or negative.

Beryllium

Be

Carbon

C

Florine

Fl

Neon

Ne

Sodium

Na

Phosphorus

P

Chlorine

Cl

Malleability

Ability to be hammered or pressed without breaking because it is metal.

Ductility

Ability to be pulled, stretched, or bent without breaking because it is tensile stress.

Lustre

a gentle, glowing shine or gloss on the surface of an object.

Gas+liquid=

Condensation

Solid+gas=

Sublimation