Chapter 5

Question 1

The reactivity series

Answer 1

potassium
sodium
calcium
magnesium
aluminium
carbon
zinc
iron
tin
lead
hydrogen
copper
silver
gold

Question 2

OILRIG

Answer 2

Oxidation Is Loss, Reduction Is Gain

Question 3

Ores

Answer 3

Rocks from which is it economical to extract the metals within

Question 4

Displacement reaction

Answer 4

Used to extract metals from ores
For metals above carbon, use electrolysis
Metals below carbon, above hydrogen, use carbon
Metals below hydrogen, use hydrogen

Question 5

Chemical reactions

Answer 5

Metal + Acid -> Salt + Hydrogen (RedOx)
Metal + Water -> Metal Hydroxide + Hydrogen
Base + Acid -> Water + Salt
Carbonate + Acid -> Salt + Water + Carbon Dioxide

Question 6

Ionic equations

Answer 6

Shows only the atoms / ions that change in the reaction

Question 7

Half equations

Answer 7

Shows transfer of electrons

Question 8

Concentration

Answer 8

The concentration of a solution depends on how much it ionises - a strong acid will ionise completely, a weaker one will only ionise partially