English National Curriculum - Science
Mission Objectives
Define exothermic and endothermic reactions
Describe examples of endothermic and exothermic reactions
Investigate energy changes in chemical reactions
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Words and meanings to learn
endothermic
a reaction that takes in energy from the surroundings, so the temperature of the surroundings goes down
chemical energy
the stored energy in the bonds of chemical substances, which can be released or absorbed during a chemical reaction
temperature
a measure of how hot or cold something is, which shows the average kinetic energy of the particles
surroundings
everything outside the reacting chemicals that can gain or lose energy
exothermic
a reaction that gives out energy to the surroundings, usually as heat, so the temperature of the surroundings goes up
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Teacher demo:
Demo of Handwarmers (single use and reusable)
Magnesium ribbon + HCl
Burning magnesium - need tongs
Main practical:
citric acid, sodium hydrogen carbonate, dilute sulfuric acid, distilled water, ammonium chloride, zinc powder, copper sulfate, magnesium ribbon, dilute hydrochloric acid
Polystyrene cups and beakers to stand them in, thermometers, spatulas
Handouts
Expert film
Mission assignment film
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