Top answers

Chemistry
GCSE

Name and explain the process in which crude oil is separated into fractions. (5 marks)

The process is fractional distillation: the separation of a mixture using heat. The crude oil is heated and the mixture will evaporate. The mixture will then rise...

Answered by Emily P. Chemistry tutor
2433 Views

Describe the bonding present in a piece of sodium metal.

A lattice of positive sodium ions with a sea of delocalised electrons distributed around them. The metallic bond consists of the electrostatic force of attracion between the positively charged sodium atom...

Answered by Mark C. Chemistry tutor
12724 Views

11.25g of hydrated copper (II) sulfate is heated to constant mass. The new mass is found to be 7.19g. What is the formula of the hydrated copper (II) sulfate?

Hydrated Copper (II) sulfateThe hydrated term means that this compound contains water of crystallisationWater of crystallisation means that there are chemically bonded water molecules wit...

Answered by Una M. Chemistry tutor
6495 Views

Describe what the Activation Energy for a reaction is.

The activation energy is the minimum amount of energy that particles need to collide with for the reaction to occur.

Answered by Adi R. Chemistry tutor
1665 Views

Can you describe ionic bonding and structure of ionic compounds to me?

Ionic bonding involves ionic bonds forming between a metal and a non- metal (show where metals and non- metals lie on the periodic table) and electrons are transferred. The structure of this ionic compoun...

Answered by Deevani J. Chemistry tutor
3565 Views

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