Neutralisation and Oxidation Reactions

Question 1

What does a metal form when it is oxidised (with oxygen)?

Answer 1

It will form a metal oxide.

Question 2

What are the 2 ways that metals can be extracted from their ores?

Answer 2

Reduction with carbon.
Electrolysis.

Question 3

Which metals can be reduced with carbon?

Answer 3

Only metals that are less reactive than carbon:

Zinc
Iron
Copper

Question 4

What is the general word equation for the reaction between an acid and a metal?

Answer 4

acid + metal ➔ salt + hydrogen

Question 5

Why do some metals not require extraction?

Answer 5

Some metals are so unreactive that they exist in the earth as pure metals (not bonded to any other element).

For example, gold is found as pure gold.

Question 6

What is the ionic equation for a neutralisation reaction?

Answer 6

H+ + OH- ➔ H2O

Question 7

What is the general word equation for the reaction between an acid and a metal hydroxide?

Answer 7

acid + metal hydroxide ➔ salt + water

Question 8

What is an oxidation reaction (in terms of oxygen)?

Answer 8

An oxidation reaction refers to a substance reacting with oxygen.

For example, copper is oxidised to form copper oxide.

Question 9

What is the general word equation for the reaction between an acid and a metal oxide?

Answer 9

acid + metal oxide ➔ salt + water

Question 10

What is the balanced symbol equation for the reduction of FeO with carbon?

Answer 10

2FeO + C ➔ 2Fe + CO2

Question 11

What is the general word equation for the reaction between an acid and a metal carbonate?

Answer 11

acid + metal carbonate ➔ salt + water + carbon dioxide