{"type":"multi-choice","id":"76048","dataJson":{"key":1,"prompt":"The air is approximately 21% oxygen. Fuels would combust more easily if this proportion was higher. ","options":[{"key":"0.30600534991227535","label":"True","value":"True"},{"key":"0.9701629664708182","label":"False","value":"False"}],"limitChoices":{"max":1,"min":1},"validResponse":["True"]}}

{"type":"multi-choice","id":"76049","dataJson":{"key":2,"prompt":"The Sun is an example of a combustion reaction.","options":[{"key":"0.331505917387917","label":"True","value":"True"},{"key":"0.25546952760484876","label":"False","value":"False"}],"limitChoices":{"max":1,"min":1},"validResponse":["False"]}}

{"type":"fill-in-blanks","id":"76050","dataJson":{"prompt":"Fill out the blanks","options":{"fuel":[{"label":"fuel","value":"fuel"},{"label":"spark","value":"spark"},{"label":"flame","value":"flame"}],"heat":[{"label":"light","value":"light"},{"label":"heat","value":"heat"},{"label":"friction","value":"friction"}],"less":[{"label":"less","value":"less"},{"label":"more","value":"more"}],"water":[{"label":"water","value":"water"},{"label":"nitrogen","value":"nitrogen"},{"label":"smoke","value":"smoke"},{"label":"fumes","value":"fumes"}],"carbon":[{"label":"carbonate","value":"carbonate"},{"label":"carbon","value":"carbon"},{"label":"carbon dioxide","value":"carbon dioxide"}],"oxygen":[{"label":"carbon dioxide","value":"carbon dioxide"},{"label":"water","value":"water"},{"label":"oxygen","value":"oxygen"},{"label":"nitrogen","value":"nitrogen"}],"carbon dioxide":[{"label":"carbonate","value":"carbonate"},{"label":"carbon monoxide","value":"carbon monoxide"},{"label":"carbon","value":"carbon"},{"label":"carbon dioxide","value":"carbon dioxide"}],"carbon monoxide":[{"label":"carbonate","value":"carbonate"},{"label":"carbon monoxide","value":"carbon monoxide"},{"label":"carbon dioxide","value":"carbon dioxide"}]},"template":"The combustion reaction occurs when oxygen and a {{fuel}} react together with enough {{heat}}. The complete combustion of a hydrocarbon produces {{carbon dioxide}} and {{water}} as its products. If there is insufficient {{oxygen}}, incomplete combustion occurs, which can produce {{carbon}} and/or {{carbon monoxide}}. Incomplete combustion gives out {{less}} heat than complete combustion.","validOptions":["fuel","heat","less","water","carbon","oxygen","carbon dioxide","carbon monoxide"],"validResponse":{"fuel":"fuel","heat":"heat","less":"less","water":"water","carbon":"carbon","oxygen":"oxygen","carbon dioxide":"carbon dioxide","carbon monoxide":"carbon monoxide"}}}

{"type":"multi-choice","id":"76051","dataJson":{"key":11,"prompt":"What is required for the combustion reaction to occur?","options":[{"key":"0.3092799094372265","label":"Heat","value":"Heat"},{"key":"0.6618766856823127","label":"Fuel","value":"Fuel"},{"key":"0.09980603348500117","label":"Friction","value":"Friction"},{"key":"0.009366491991553372","label":"Oxygen","value":"Oxygen"},{"key":"0.3664100652619834","label":"Dry twigs","value":"Dry twigs"}],"limitChoices":{"max":3,"min":3},"validResponse":["Heat","Fuel","Oxygen"]}}

{"type":"multi-choice","id":"76052","dataJson":{"key":4,"prompt":"Why can combustion be considered an energy transformation? ","options":[{"key":"0.13303105013909067","label":"because products are made","value":"because products are made"},{"key":"0.6919675963873159","label":"because chemical potential energy is transformed into thermal, light and sound energy","value":"because chemical potential energy is transformed into thermal, light and sound energy"},{"key":"0.07956515433276046","label":"because chemical energy is transformed into heat energy","value":"because chemical energy is transformed into heat energy"},{"key":"0.44443145971623144","label":"because thermal and light energy transforms to chemical potential energy","value":"because thermal and light energy transforms to chemical potential energy"}],"limitChoices":{"sameNumberAsCorrectAnswers":true},"validResponse":["because chemical potential energy is transformed into thermal, light and sound energy"]}}

Answer incorrect

Look at the slide below to work out the answer.