Question 8
[Maximum number: 1]
Which substance is a mixture?
A
air
B
graphite
C
oxygen
D
water
CAIE IGCSE Chemistry Elements Compounds and Mixtures
Practise defining and distinguishing elements, compounds and mixtures from particle diagrams, substance names and whether components are chemically bonded.
How this is tested
- define an element as atoms with one proton number that cannot be chemically broken down further
- define a compound as two or more elements chemically bonded in a fixed substance
- identify a mixture as substances not chemically combined, including air, brass or mixed particle diagrams