Redox

Question 1

What are transferred in a REDOX reaction?

Answer 1

Electrons.

Question 2

Loss of electrons is:

Answer 2

Oxidisation

Question 3

Gain of electrons is:

Answer 3

Reduction

Question 4

In a redox reaction what happens simultaneously?

Answer 4

Reduction and Oxidisation

Question 5

What does an Oxidising agent do?

Answer 5

Accepts electrons, gets reduced.

Question 6

What does a Reducing agent do?

Answer 6

Donates electrons, gets oxidised.

Question 7

What happens to the Oxidisation Number when an electron is lost?

Answer 7

It increases (oxidised).

Question 8

What happens to the Oxidisation Number when an electron is gained?

Answer 8

It decreases (reduced).

Question 9

How do you know if an element has been oxidised or reduced from a chemical equation?

Answer 9

Assign an Oxidisation Number before and after for each element.

If it goes up, its been oxidised. If it goes down, its been reduced.

Question 10

What do metals generally do when forming compounds?

Answer 10

Metals generally donate electrons. (Negative oxidation numbers).

Question 11

What do Non-Metals generally do when forming compounds?

Answer 11

Non metals generally gain electrons. (Positive oxidation numbers).