Types of Mixtures
A mixture can be:
● Homogenous uniformly mixed
throughout such as cake
batter.
● Heterogeneous - nonuniform consistency
such as concrete.
A mixture can be separated easily into its ingredients, using simple techniques.
These techniques include:
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Filtration
Decanting
Evaporation
Crystallisation
Distillation
Chromatography
Soluble & Insoluble
Substances
BRAINSTORM: Soluble & Insoluble Substances
As a class, complete the table below.
Soluble
Sugar
Salt
Insoluble
Flour
Chalk Dust
Sand
Solute, Solvent and Solutions
● A mixture of one substance dissolved in another is called a solution.
● The substance that dissolves is called the solute. The substance that the solute
dissolves in is called the solvent.
The Great Picnic
Mix Up
Crash Course Kids 19.1 (2015)
SOLVENTS used around the home
● Acetone (nail polish remover)
● Oils - WD40, turpentine,
gasoline
● Water - the universal solvent!
Water as a Solvent
● Solutions in which water
is the solvent are called
aqueous solutions.
● Water is a good solvent
because many chemicals
can dissolve in it.
Water as a Solvent
As a class, read the
handout ‘The Importance
of Water as a Solvent’.
Next, list at least THREE
ways water makes a good
solvent.
THINK-PAIR-SHARE: What else is water used for?
1. THINK: in your books, make a
list of things water can be used
for.
1. PAIR: discuss your ideas with
the person sitting next to you.
1. SHARE your ideas with the rest
of the class.
10 Amazing
Properties of Water
Flashy Tuber, 2018