Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Chemistry revision on redox reactions for A-Level Chemistry.

Reduction and oxidation are terms used to describe

any reactions in which electrons are transferred.

A substance that is reduced

takes electrons from the substance that is oxidised.

A reaction in which both oxidation and reduction takes place is called a

redox reaction.

Oxidation is

the loss of electrons or an increase in oxidation number.

Reduction is

the gain of electrons or a decrease in oxidation number.

Half equations show

electron transfer, which element is oxidised and which is reduced.

Metals tend to be


Non-Metals tend to be


The more electronegative element attracts more

electron(s) and is then reduced.

Oxidising Agent: is

a reagent that oxidises another species by taking electrons from it.

Reducing Agent is

a reagent that reduces another species by adding electrons to it.

Oxidising and reducing agents are always

the whole species (as the chemical appeared in the beginning of the equation).

A disproportionation reaction

is the oxidation and reduction of the same element in a redox reaction, such as Cl2 + H20 --> HCL + HOCl, with chlorine being oxidised and reduced.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording