Chemical Reactions

Question 1

Oxidation reactions

Answer 1

A transfer of electrons between species. Losing electrons.

Question 2

Redox reactions

Answer 2

A transfer of electrons between species. Gaining of an electron.

Question 3

Oxidation number rule 1

Answer 3

Free elements, Uncombined have a oxidation of zero

Question 4

Oxidation number rule

Answer 4

In monatomic ions the oxidation number is equal to the charge.

Question 5

Oxidation number for oxygen when it is combined

Answer 5

Always -2

Question 6

If the oxidation number of an element increases in a reaction

Answer 6

The element is oxidised. And is the reducing agent.

Question 7

If the oxidation number decreases in a reaction.

Answer 7

The element is reduced. And the element is the oxidising agent.

Question 8

Precipitation reaction

Answer 8

Reaction where the end product is a form of solid. From aq to S.

Question 9

Acid base reaction.

Answer 9

When a compound picks up or and donates a H+

Question 10

Amphoteric

Answer 10

A substance that can act as both an acid or a base.