EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Natural gas or methane is a fossil fuel. In a plentiful supply of air, it burns to give carbon dioxide and water. Write a balanced equation to show this.

Important Questions on Air and Water

EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 3
If methane burns in a poor supply of air it will give carbon monoxide and water instead. See if you can write a balanced equation to show this.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 4
Catalytic converters can remove carbon monoxide.
Give a word equation for the reaction that takes place.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 4

Catalytic converters can remove carbon monoxide.

What is the purpose of the transition elements?

EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 1
What is rusting?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 2
Which two substances cause iron to rust?
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 3
See if you can think of a way to prove that it is the oxygen in air, not nitrogen, that causes rusting.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 4
Iron that is tin-plated does not rust. Why not?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 15 - Air and Water>Q>Q 5
You have a new bike. Suggest steps you could take to make sure it does not rust. Give a reason for each one.