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

What is a common indicator of an exothermic reaction?

What do you call reactions which absorb heat?

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

For an effective heat pack reaction, what is critical?

What type of reaction transfers heat to the surroundings?

What is the solid left called when hydrated copper sulfate is heated?

An endothermic reaction is defined by:

Why do reactions occur faster at higher temperature?

In a warming reaction used in hand warmers, what type of reaction is desired?

What colour is anhydrous copper sulfate?

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