SCHEME OF WORK FOR SCIENCE TOPIC:
SCI AT AT1: Scientific Enquiry
Focus on: Obtaining and Presenting Evidence
use simple equipment and materials appropriately and take action to control risks
make systematic observations and measurements, including the use of ICT for datalogging
AT1 2g) check observations and measurements by repeating them where appropriate
SCI AT 3: Materials and their Properties
AT3 2a) Describe changes that occur when materials are mixed [for example, adding salt to water]
AT3 2b) Describe changes that occur when materials [for example, water, clay, dough] are heated or cooled
AT3 2c) Understand that temperature is a measure of how hot or cold things are
AT3 2d) Understand reversible changes, including dissolving, melting, boiling, condensing, freezing and evaporating
AT3 2e) Identify the part played by evaporation and condensation in the water cycle
AT3 2f) Understand that non-reversible changes [eg: vinegar & bicarbonate of soda, plaster of Paris & water] form new materials that may be useful
AT3 2g) Understand that burning materials [eg: wood, wax, natural gas] forms new materials and that this change is not usually reversible.
Separating mixtures of materials
AT3 3a) Separate solid particles of different sizes by sieving [for example, those in soil]
AT3 3b) Understand that some solids [for example, salt, sugar] dissolve in water to give solutions but some [for example, sand, chalk] do not
AT3 3c) Separate insoluble solids from liquids by filtering
AT3 3d) Recover dissolved solids by evaporating the liquid from the solution
AT3 3e) Use knowledge of solids, liquids and gases to decide how mixtures might be separated
Recognise that some changes [for example, the freezing of water] can be reversed and some [for example, the baking of clay] cannot
Classify changes as reversible and non-reversible
Describe differences between the properties of solids, liquids and gases
Classify substances as solids, liquids or gases
Describe some methods [eg: filtration, distillation] that are used to separate simple mixtures.
Use scientific terms [eg: evaporation, condensation] to describe changes.
Understand reversible and irreversible changes and make simple predictions about whether other changes are reversible or not.
Identify a range of contexts in which changes [eg: evaporation, condensation] take place.
Understand how a specific mixture [for example, salt and water, sand and water] can be separated.
Suggest ways in which other similar mixtures might be separated.