Page 18 - Big Ideas Year 10 sciPAD 2025

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18 SCIPAD - BIG IDEAS - BOOK 2
NATURE OF THE ATOM
Mixtures & Compounds
Compounds are substances made of two or more elements chemically combined. The properties
of a compound are completely different from the elements that combined in a chemical reaction
to make it.
Mixtures are anything that isn’t an element or compound. The properties of mixtures are just the
same as the properties of the substances put in them.
1. Outline two pieces of evidence from the photographs that show a chemical reaction has
occurred. 


2. Complete the word equation for the reaction shown in the photographs.
+
3. Label the diagrams below as either an element, a compound or a mixture.
(a) 
(d)
(b)
(e)
(c)
(f)
A mixture of iron and sulfur
can easily be separated by
using a magnet.
1 A reaction occurs when the
mixture is heated, forming a
compound (iron sulfide).
2 Iron sulfide is no longer
magnetic, showing that it has
formed a compound.
3
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