REDOX

Question 1

What is oxidation?

Answer 1

Oxidation is the loss of electrons

Question 2

What is reduction?

Answer 2

Reduction is the gain of electrons

Question 3

What is a REDOX reaction?

Answer 3

REDOX reaction is when both oxidation and reduction occur

Question 4

What are 3 strong oxidising agents?

Answer 4

Permanganate, Dichromate and Hydrogen peroxide

Question 5

What is a reducing agent?

Answer 5

The reactant which donates electrons and is oxidised

Question 6

What is an oxidising agent?

Answer 6

The reactant which accepts electrons and is reduced

Question 7

What compounds tend to act as the best oxidising agents?

Answer 7

1.Non-metals
2. Halogens
3. Elements with high electronegativities

Question 8

What compounds tend to act as the best reducing agents?

Answer 8

1. Metals
2. Alkali metals
3. Elements with low electronegativities

Question 9

What is 1 strong reducing agent

Answer 9

Carbon Monoxide gas

Question 10

Where on the electrochemical series are the best oxidising agents found?

Answer 10

Bottom of the left-hand column

Question 11

Where on the electrochemical series are the best reducing agents found?

Answer 11

Top of the right-hand column

Question 12

Why are oxidising agents widely used?

Answer 12

Because they can kill fungi, bacteria and can be used for bleaching clothes

Question 13

What are the steps to writing and balancing REDOX equations?

Answer 13

1. Check that the main element is balanced
2. Add water to balance the oxygen atom
3. Add H+ ions to balance any hydrogen atoms
4. Add electrons to the same side as the H+ so both sides have the same overall charge