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This slideshow covers the C5 Energy Changes unit, including: exothermic and endothermic reactions in terms of temperature changes, energy level diagrams, exothermic and endothermic reactions in terms of bond energies, using bond energies to calculate energy released in reactions, drawing bond energies on energy level diagrams, how cells and batteries work, metal potentials and reactivity, alkaline vs rechargeable batteries, hydrogen fuel cells, fuel cell equations, advantages of hydrogen fuel cells.

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