1.2 understand how the interconversion of solids, liquids and gases are achieved and recall the names used for these interconversions

SOLID - GAS: SUBLIMATION
SOLID - LIQUID: MELTING
LIQUID - SOLID: SOLIDIFICATION
LIQUID - GAS: BOILING
GAS - LIQUID: CONDENSING
GAS - SOLID: DEPOSITION


Evaporation happens below the boiling point.

1.1 understand the arrangement, movement and energy of particles in each of the three states of matter: solid, liquid & gas

Solid: Particles are very close together, regular arrangement. They stay in one position. Definite shape and volume, not compressible.

Liquid: Particles are partly close together, irregular arrangement. They slip and slide over each other. Indefinite shape and definite volume. They are not compressible.

Gas: Not close together, random arrangement. They move quickly/bounces/moves freely. Spreads out the fill available volume and the volume depends on the size of the container. They are compressible.

1.6 understand the differences between elements, compounds and mixtures

An element is a single pure substance - it can't be split up into anything else.

Compounds contain 2 or more elements that are chemically combined.

A mixture contains 2+ substances that are not chemically joined together and can be separated. 

1.5 understand the terms atom and molecule

An atom is the smallest part of an element which can exist.

A molecule consists of a small number of atoms that are covalently joined together.