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Chemistry

GCSE

What is the difference between oxidation and reduction?

In chemistry if a substance is oxidised it loses electrons in a reaction.

If a substance is reduced it gains electrons in a reaction.

A reaction that has both oxidation and ...

Answered by Thomas C. • Chemistry tutor

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How do reversible reactions reach an equilibrium?

Reversible reactions are reactions where the products are able to react themselves into the reactants. At the beginning of the reaction, there will be more reactants than products. But as the reaction goe...

Answered by Nandini M. • Chemistry tutor

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What is empirical formula and how is it worked out?

This is the lowest/simplest ratio of the molecule. For example propene has the formula C₃H₆

Answered by Emma W. • Chemistry tutor

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Why is a diamond harder than graphite if they're made of the same substance?

Both diamond and graphite are made of carbon. Carbon can form a maximum of 4 covalent bonds due to carbon having 4 electrons on it's outer shell. In diamond, each carbon atom forms 4 covalent bonds in ...

Answered by Chantelle C. • Chemistry tutor

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