201 Chemistry/2.6
From WikiEducator
At Papanui instead of completing Achievement Standard 2.6 we complete Unit Standards 8942: Characterise the nature of chemical systems at equilibrium (2 credits) and 6338: Characterise the behaviour of weak and strong acids and bases (3 credits).
Equilibrium
By the end of this unit you will be able to:
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Energy Changes
By the end of this unit you will be able to:
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Exothermic and endothermic reactions
When you have carried out chemical reactions you will probably have noticed the temperature of the reaction changing. This is due to a transfer of energy. Reactions that give out heat, such as burning and acid plus metal reactions are exothermic and reactions that take in heat such as photosynthesis are endothermic. Exothermic and endothermic reactions can also be represented using energy level diagrams.
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Exothermic | Endothermic |
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