1. Formulae and Equations

Question 1

What should the oxidiation numbers of a compound add up to?

Answer 1

0

Question 2

What is the oxidation number of an element or an element bonded to itself?

Answer 2

0

Question 3

What is the oxidation number for group 1 and 2 elements in compounds?

Answer 3

1 and 2.

Question 4

What is the oxidation number for group 6 and 7 elements in compounds?

Answer 4

-2 and -1.

Question 5

What is the oxidation number of hydrogen in a compound?

Answer 5

1 except in metal hydrides.

Question 6

What is the oxidation number of oxygen in a compound?

Answer 6

-2 except with fluorine or in peroxides.

Question 7

What are the state symbols?

Answer 7

(s) - Solid
(l) - Liquid
(g) - Gas
(aq) - Aqueous

Question 8

What are ions that do not change in a reaction called?

Answer 8

Spectator ions.

Question 9

-ide?

Answer 9

Element on its own.

Question 10

-ate?

Answer 10

Element with oxygen added.

Question 11

MASH?

Answer 11

Metal + Acid —> Salt + Hydrogen

Question 12

BASW?

Answer 12

Base + Acid —> Salt + Water

Question 13

AASW?

Answer 13

Acid + Alkali —> Salt + Water

Question 14

CASWC?

Answer 14

Carbonate + Acid —> Salt + Water + Carbon dioxide