oxidation and reduction

Question 1

What is reduction?

Answer 1

A gain of electrons by a reactant in any reaction

Question 2

What is oxidation?

Answer 2

A loss of electrons by a reactant in any reaction

Question 3

What happens in a redox reaction?

Answer 3

reduction and oxidation take place at the same time

Question 4

What is an oxidising agent?

Answer 4

A substance that much accepts electrons
(found as a reactant in the reduction reaction)

Question 5

What is a reducing agent?

Answer 5

A substance which donates electrons

(found as a reactant in the oxidation reaction)

Question 6

How to write complex redox equations?

Answer 6

1-balance anything that’s not hydrogen or oxygen
2-balance the oxygens with molecules of water
3-balance the hydrogens with H+
4-balance the charges with electrons (in most positive side

Question 7

What can act as reducing and oxidising agents?
+examples

Answer 7

compounds, group ions and molecules

-hydrogen peroxide-molecule-oxidising agent
-dichromate and permanganate ions-group ions-strong oxidising agents in acidic solutions
-carbon monoxide-gas-reducing agent

Question 8

Uses of oxidising agents

Answer 8

widely employed because of the effectiveness with which they can kiss fungi and bacteria and can inactivate viruses

good for use as black for clothes and hair

Question 9

Are neutralisation reactions redox reactions

Answer 9

NO