3.x Key Chemical Reactions (GCSE Chemistry)

The following is a GCSE Chemistry test covering '3.x Key Chemical Reactions'

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Question 1

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What does exothermic mean?

When copper sulfate turns blue from white, it is due to what?

What happens to hydrated substances when heated strongly?

If an exothermic reaction takes place, what happens to the temperature of surroundings?

What do you call reactions which absorb heat?

What colour is anhydrous copper sulfate?

In chemical hand warmers, why is an exothermic reaction essential?

What is the symbol `?` used for in reactions?

Why do reactions occur faster at higher temperature?

What would you call a reaction pathway that can be reversed?

When copper sulfate is hydrated, what colour does it become?

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