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Chemistry
A Level

How would you name complex organic compounds?

How many carbons are in the longest carbon chain?

Prefixes: meth- (1), eth- (2), prop- (3), but- (4), pent- (5), hex- (6)

What functional groups are present?

Answered by Sneha J. Chemistry tutor
4868 Views

Explain why hydrogen bonding occurs between water molecules

Water molecules have a molecular formula of H2O. The O-H bond in water is a polar bond. This is because there is a big difference in electronegativity between the oxygen and the water. It is known that ox...

Answered by Mohammed A. Chemistry tutor
14373 Views

Calculating the charge of a molecule e.g In NH4 what is the charge of the nitrogen atom?

For the atom which you want to calculate the charge determine the number of valence electrons a free atom usually has. this is the number of atom on the outer shell so for nitrogen, it has 5 valence atoms...

Answered by Christine M. Chemistry tutor
7620 Views

Why does bromine water become colourless upon the addition of ethene, but not ethane? What is this reaction called?

Bromine water reacts with ethane as it is able to break open the double bond, forming 1,2-dibromoethane. This double bond is not present in ethane, so bromine water does not react with it. This reaction i...

Answered by Omar A. Chemistry tutor
20412 Views

Work out the shape of an SF6 molecule

To work out the shape of the SF6 molecule we can use a simple equation which allows us to work out the number of electron pairs. The equation is (old group + electrons donated +/- charge) / 2. If the char...

Answered by Maciej W. Chemistry tutor
2218 Views

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