Element, mixture or compound? 1
8Gc(5)
Name
Class
Date
Elements cannot be broken down into anything simpler as they
only contain one kind of atom. There are about 100 different
elements, with a variety of different properties and uses.
Molecules of an element.
Compounds contain two or more elements that are joined
together chemically. Although there are only 100 elements,
there are millions of different compounds.
8
G
c
Molecules of a compound.
Look at the drawings of atoms and molecules below.
A
B
C
D
E
F
1 Which of the boxes show a pure element?
2 Which of the boxes show a mixture of elements?
3 Which of the boxes show a pure compound?
4 Which of the boxes show a mixture of compounds?
The diagrams below show the atoms in three different types of gold.
Gold X
Key:
Gold Y
Gold Z
copper
gold
5 a Which of the above types of gold would be the most expensive?
b Explain your answer.
I CAN...
• identify elements, compounds and mixtures from particle diagrams.
Exploring Science
M07_EXSC_CM_Y8GBR_2506_UG.indd 331
edition
331
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21/8/08 14:39:59