Chemical formulae 3

Chemical formula of Copper(II) Hydroxide?

• CuOH
• CuOH₂
• Cu(OH)₂
• Cu(OH₂)

Chemical formula of Iron(II) Oxide

• FeO
• Fe₂O₂
• Fe₂O₃
• Fe₂O

Chemical formula of Methane gas (found in bunsen burner gas)?

• Me₂
• Me₄
• CH₂
• CH₄

Acid + Metal → ____________________
(Tip: MASH) 

• Salt + Hydrogen gas
• Salt + Water
• Salt + Water + Carbon dioxide gas
• Salt + Water + Ammonia gas

Acid + Metal Oxide (Base) → ____________________
(This is a neutralisation reaction)

• Salt + Hydrogen gas
• Salt + Water
• Salt + Water + Carbon dioxide gas
• Salt + Water + Ammonia gas

Acid + Metal Hydroxide (Base) → ____________________
(This is a neutralisation reaction)

• Salt + Hydrogen gas
• Salt + Water
• Salt + Water + Carbon dioxide gas
• Salt + Water + Ammonia gas

Acid + Metal Carbonate → ____________________

• Salt + Hydrogen gas
• Salt + Water
• Salt + Water + Carbon dioxide gas
• Salt + Water + Ammonia gas

Ammonium Salt + Metal Hydroxide (BASE) → ____________________

• Salt + Hydrogen gas
• Salt + Water
• Salt + Water + Carbon dioxide gas
• Salt + Water + Ammonia gas

Which of the following is an acidic oxide?
Tip: Metal oxides are basic oxides, eg: MgO. Non-metal oxides are acidic oxides, eg: CO₂, NO_2. Special cases: CO, NO are neutral oxides.

• Aluminium Oxide
• Carbon Dioxide
• Carbon Monoxide
• Magnesium Oxide

An amphoteric oxide can react with acid, and can also react with base!
There are 3 important amphoteric oxides below. (Memory Aid: Letter A Loves Z)
Which of the following is NOT an amphoteric oxide?

• Lead(II) Oxide
• Aluminium Oxide
• Zinc Oxide
• Nitrogen Monoxide