You need to use the BBC bite size site to help you revise elements, compounds and mixtures.

http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/

Undertake both atoms and elements, and compounds and mixtures

Instead of doing the test, complete the sheets you have been given.

Make sure these are stuck in your prep book and hand it in Monday 8.15 a.m.

a) Be clear where the light comes from in the first place and how light travels.

b) Need to use you textbook or internet for this - show new moon, 1st quarter, full moon, last quarter.

c) Remember that light relfects with angle of incidence equally angle of reflection.

d) Think about what sound needs to be able to travel and how light is different.

e) It was on a stormy night...

f) Good vibrations!

Lovely. Now hand it (Monday 8.15).

Extraction of metals

This piece of work should be up to 2 pages long.

Remember to use diagrams and pictures where this is useful.

You need to cover the following points

Examples of ores

• Why most metals are not found “native” (which are?)
• How metals are extracted showing a range of methods to include both the smelting of iron ore (show a blast furnace and what happens) and the electrolysis of aluminium (keep to the general principles – don’t get bogged down in the chemistry)
• When the metals were first identified (stick to ones we use in class – copper, iron, aluminium etc)
• Uses of different metals.

Remember you have a physics test Monday morning.

weight = mass x gravity

pressure = force divided by area

turning moment -= force x distance

Check up on extension of springs including what happens to extension with series and parallel springs.

Check you can remember units of measurement.