Absolute Science: Non-specialist Teacher Pack Year 7 by Brian Arnold, Geoff Jones, Mary Jones, Emma Poole

By Brian Arnold, Geoff Jones, Mary Jones, Emma Poole

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B Solids have a high density. a Liquids can flow. b Liquids do have a fixed volume. a Gases have a low density. b Gases do not have a fixed volume. solids gases liquids liquids and solids summer It is a liquid at room temperature. The blackcurrant gradually diffuses through the water. When a gas is cooled it contracts 0°C 15 a solid 0°C b gas a solid 16 a solid b liquid b liquid Literacy activity answers a b c d e f one of a kind When it is so cold that the flakes can reach the ground without melting.

If after 5 minutes you can still see nothing, go back to step 2 and put some ‘new’ smoke into your cell. During the experiment there are smoke particles, small pieces of ash, and air particles trapped in the cell. Air particles are too small to be seen even with very powerful microscopes so the silvery specks you can see are smoke particles. They look silvery because they are reflecting light from the lamp. If you look carefully you can see that a) the smoke particles are moving in all different directions and b) the direction of any particular smoke particle keeps changing.

25 to add the functions of the parts on their diagrams. Pupils have drawn and labelled a diagram of an animal cell. Safety! Use and disposal of cotton bud for sampling cheek cells. Safety! Use of methylene blue stain. 15 Direct pupils to do the practical activity, completing it be drawing two or three cells. 5 Instruct pupils to pack up their microscopes. 15 As a class, discuss a selection of cheek cell diagrams referring to Pupil Book pp. 24 and 25. If time, show and discuss OHTs of other animal cells.

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