Energy Transfers and Reaction Profiles - GCSE Chemistry Worksheets Subject:Chemistry Age range:14-16 Resource type:Worksheet/Activity pptx, 44.14 MB This resource contains 3 worksheets for energy transfers in chemical reactions and reaction profiles that can be used in class or as homework to enab...
For example, the following student response to Biomass Part A is considered an expert level response (coded as 4) because it contains the following ideas: water usage will increase (bin A) and there will be changes to the local river (bin D). The student therefore makes two connections ...
Energy changes Exothermic reactions Examples: respiration, combustion, oxidation, neutralisation Energy ‘exits’ reaction – heats surroundings Thermometer readings rises Uses: self heating can and hand warmers Energy changes Endothermic reaction Examples: photosynthesis, thermal decomposition, reaction of citric...
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