1) Which colour bunsen burner flame is hottest? a) Blue b) Yellow c) Green d) Blue 2) Combustion is another word for what? a) Dancing b) Burning c) Cleaning d) Fizzing 3) In a firework, metals burn with what gas to produce coloured flames? a) Hydrogen b) Helium c) Oxygen d) Carbon Dioxide 4) What colour bunsen burner flame is the safest? a) Pink b) Yellow c) Blue d) Purple

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