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What is the difference between a polar molecule and a non-polar molecule? Can non-polar molecules be formed by polar atoms?
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What determines rate of reaction?
The rate of reaction between marble chips and hydrochloric acid can be increased by: a) increasing the concentration of the hydrochloric acid, b) increasing the temperature of the hydrochloric acid. Explain why in terms of the reacting particle model.(6)
Describe how a metal conducts electricity
Plan an experiment that would allow you to determine the maximum voltage that can be achieved using strips of lithium, zinc, copper and aluminium.
What is the difference between an Atom and an Ion?
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