Top answers

Chemistry
GCSE

Explain how a covalent bond holds two atoms together.

The electrostatic forces of attraction between the shared pair of bonded electrons and the positively charged nuclei hold the atoms together.

AR
Answered by Adam R. Chemistry tutor
10785 Views

Describe how to separate hydrocarbons of different lengths

Heat the oil up until it is a vapour Pass into fractionating column Negative temperature gradientHydrocarbons of different lengths have different boiling points They condense at different heights and are ...

MN
Answered by Mia N. Chemistry tutor
2078 Views

Describe Ionic/ covalent bonding

Ionic bonding: When a metal loses electron(s) and a non-metal gains electron(s) to achieve a full outer shell For example, sodium chloride (NaCl) Points to make: Which atom lose...

AL
Answered by Aimee L. Chemistry tutor
1953 Views

Explain how crude oil gets separated into its components

Crude oil is a mixture of hydrocarbons with varying length carbon chains. The main method used to separate these is fractional distillation. The crude oil is heated, then placed inside a fractionating col...

KR
Answered by Kathryn R. Chemistry tutor
16903 Views

What is the difference between ionic and covalent bonding

The main difference is that covalent bonding is the sharing of electrons, whereas in ionic bonding electrons are transferred. Ionic bonding is between a metal and a non-metal whereas covalent bonding is b...

VG
Answered by Verity G. Chemistry tutor
4336 Views

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