Things to memorise

Question 1

What are the charges of:
Zinc ions
Silver ions
Hydrogen ions
Ammonium ions

Answer 1

Zinc = Zn²⁺
Silver = Ag⁺
Hydrogen = H⁺
Ammonium = NH₄⁺

Question 2

What are the charges of:
Nitrate ions
Hydroxide ions
Carbonate ions
Sulfate ions

Answer 2

Nitrate = NO₃⁻
Hydroxide = OH⁻
Carbonate = CO₃²⁻
Sulfate = SO₄²⁻

Question 3

What are the products in a reaction with:
Metal + Oxygen
Metal + Water
Metal + Acid
Acid + Alkali
Metal Hydroxide + Acid
Metal Oxide + Acid
Metal Carbonate + Acid

Answer 3

Metal + Oxygen –> Metal Oxide
Metal + Water –> Metal Hydroxide + Hydrogen
Metal + Acid –> Salt + Hydrogen
Acid + Alkali –> Salt + Water
Metal Hydroxide + Acid –> Salt + Water
Metal Oxide + Acid –> Salt + Water
Metal Carbonate + Acid –> Salt + Water + Carbon Dioxide

Question 4

What is the chemical name of limewater?

Answer 4

Calcium Hydroxide

Question 5

What are the solubility rules?

Answer 5

1. All group 1 metals and ammonium compounds are soluble
2. All nitrates are soluble
3. Almost all sulfates are soluble apart from lead, barium and calcium
4. Almost all group 7 sats are soluble apart from silver, mercury and lead
5. Almost all carbonates and hydroxides are insoluble, apart from group 1 and ammonium (rule 1)