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Exploring Science 7© Pearson Education Limited 2004 1Which list contains only fuels? Awood, iron, plastic Bwood, petrol, oxygen Cpetrol, oil, natural gas Dair, wood, oil Quick Quiz 7Fe
Exploring Science 7© Pearson Education Limited 2004 2When a fuel burns there is: Aa reversible physical change Ba reversible chemical change Can irreversible physical change Dan irreversible chemical change. Quick Quiz 7Fe
Exploring Science 7© Pearson Education Limited 2004 3Which statement finishes off this word equation for burning? fuel + oxygen _______________ Acarbon dioxide + water (+ energy) Bcarbon dioxide + carbon monoxide Cfuel oxide + oxygen (+ energy) Dmethane + carbon dioxide (+ energy) Quick Quiz 7Fe
Exploring Science 7© Pearson Education Limited 2004 4Which of these candles will burn the longest? Quick Quiz 7Fe A B C D
Exploring Science 7© Pearson Education Limited 2004 1Which list contains only fuels? Awood, iron, plastic Bwood, petrol, oxygen Cpetrol, oil, natural gas Dair, wood, oil Quick Quiz answers 7Fe
Exploring Science 7© Pearson Education Limited 2004 2When a fuel burns there is: Aa reversible physical change Ba reversible chemical change Can irreversible physical change Dan irreversible chemical change. Quick Quiz answers 7Fe
Exploring Science 7© Pearson Education Limited 2004 3Which statement finishes off this word equation for burning? fuel + oxygen _______________ Acarbon dioxide + water (+ energy) Bcarbon dioxide + carbon monoxide Cfuel oxide + oxygen (+ energy) Dmethane + carbon dioxide (+ energy) Quick Quiz answers 7Fe
Exploring Science 7© Pearson Education Limited 2004 4Which of these candles will burn the longest? Quick Quiz answers 7Fe A B C D
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© Boardworks Ltd of 12. © Boardworks Ltd of 12 Some chemical reactions give out energy. For example: Energy changes in chemical reactions.
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