Natural+Processed+Materials

Observation/Inference
Understanding the difference between both terms · Observations deal with the senses · Inferences deal with educated guesses

Features of Solids, Liquids and Gases
· recognising the different phases · their characteristic properties

Change of Phase
Understanding how the properties of substances change when conditions change such as being subjected to heating or cooling. · fusion (melting ) · vaporisation(boiling) · condensation · solidification(freezing)

Physical and Chemical Changes
Understanding the features of physical and chemical changes · recognising common situations · distinguishing between both types of change

Separation Processes
Understanding methods which can be used to separate pure substances · decantation · filtration · evaporation · crystallisation · chromatography

Introduction to Elements and Compounds
Understanding that substances can be grouped into elements, compounds and mixtures · recognising chemical symbols (ie H-hydrogen, O-oxygen, etc) · periodic table (ie only 92 naturally occurring elements)