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Chemistry
A Level

What are Acids and Bases?

Acids, by definition, are proton donors, so will donate a H+ ion to a base. Examples of acids may be HCl or ethanoic/acetic acid (a.k.a. vinegar).

Base...

Answered by Omri T. Chemistry tutor
4684 Views

Why does the First Ionisation Energy decrease down a group in the Periodic Table?

Two major factors control how tightly held the outermost electron is and therefore how much energy is required to remove it, which gives us the size of the Ionisation energy. The first of these factors...

Answered by Daniel K. Chemistry tutor
47227 Views

What is meant by the 'First Ionisation Energy' of an element?

The ionisation energy of an element is the energy required to remove the one of the outermost electrons from an atom of the element in its gaseous state. 

 This is quite a difficult proce...

Answered by Daniel K. Chemistry tutor
3487 Views

How can aldehydes and ketones be distinguished?

Firstly note that in general aldehydes are more reactive than ketones. This is a result of two effects: 

1. Ketones are more sterically hindered.

2. Alkyl groups are electro...

Answered by George B. Chemistry tutor
60128 Views

How do mass spectrometers work?

A mass spectrometer is a piece of lab equipment used to measure the relative atomic masses of atoms and molecules. It is widely used to identify substances in the lab.

The process is ofte...

Answered by George B. Chemistry tutor
3323 Views

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