Students classify six common substances as either a solid, liquid, or a gas. Students then group these substances into elements, mixtures, or compounds.
Answers/responses:
Y10 (05/1999)
a)
Solids
copper sulfate crystals
zinc Liquids
petrol Gases
air
carbon dioxide
oxygen
3 correct – very easy 2 correct – very easy 1 correct – very easy
b)
i)
Elements
oxygen
zinc Mixtures
air
petrol Compounds
carbon dioxide
copper sulfate crystals