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Chemistry
GCSE

Explain what happens to magnesium and oxygen atoms when they react to form Magnesium oxide.

When this reaction occurs, strong ionic bonds form between two oppositely charged particles (ions). 

Magnesium is a group II metal, and therefore has two electrons in it's highest energy ...

Answered by Mathew C. Chemistry tutor
87871 Views

A titration is carried out and 0.04dm^3 of sulphuric acid neutralises 0.08dm^3 sodium hydroxide of concentration 1mol/dm^3. Calculate the concentration of the sulphuric acid.

The first thing to do with this titration calculation is write the balanced symbol equation for the reaction. Using the knowlege that when an acid and base react a salt and water is produced we can wri...

Answered by Victor A. Chemistry tutor
3498 Views

Why does copper make a good metal to use in electrical wiring?

Copper, like all metals, is a conducter of electricity. Copper is particularly effective because of the way its electrons are arranged allows for more free movement of electrons which allows for more e...

Answered by Matthew H. Chemistry tutor
29883 Views

what is an ion? and how are they made?

An ion is a charged particle. 

They are made when an atom of neutral charge accepts or donates an electron from another atom or ion in order to bond with one another.

Answered by Shaun W. Chemistry tutor
2763 Views

An equilibrium between hydrogen and nitrogen to make ammonia. Explain what would happen to the amount of product if a) pressure was increased b) temperature was increased c) a catalyst was added. Energy change -92KJ/mol

This is quite a complicated sounding question but it is actually quite simple if you break it down! Start by writing a balanced equation for the reaction:

3H2 (g) + ...

Answered by Abigail C. Chemistry tutor
8961 Views

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