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Chemistry

GCSE

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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What is the equation for complete combustion and what does it require?

The equation for complete combustion is:

hyrdocarbon + oxygen -> water + carbon dioxide

A plentiful supply of oxygen is required in order to ensure complete combustion....

Answered by Collette L. • Chemistry tutor

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Why can graphite conduct electricity?

Graphite is a mineral whose molecular structure is made up of carbon atoms.

A carbon atom can bind up to 4 other atoms around it (it has 4 electrons in its outer-most shell which it can ...

Answered by Aneesh S. • Chemistry tutor

23033 Views

Why can ammonium sulfate be described as a salt?

A salt is an ionic compound which is made up of two groups of oppositely charged ions.
The overall compound of a salt compound must have an overall electrical charge of 0.
Ammon...

Answered by Chloe R. • Chemistry tutor

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