Solutions
and
Suspensions
What are Solutions?
Solutions are mixtures in which
soluble particles are
completely dissolved in a
liquid or gas.
How do we create a solution?
Solute + Solvent = Solution
The solid which fully
dissolves
The liquid which is used to dissolve
the solid
Example: salt
+ water  salt solution
(solute) (solvent)
Properties of
Solutions
• Homogeneous (solvent &
solute particles evenly
spread throughout the
solvent)
• No residue (undissolved
solid) is left after
filtration
Properties of
Solutions
• No separation of
solute and solvent
when left to stand
• Light is able to completely
pass through a solution
Dissolving solid to form a solution
When a solid dissolves to form a solution, the
solute particles separate and mix evenly with
the solvent particles.
Uses of solutions in Homes
• Soap and detergent are dissolved in water to
help us wash our laundry.
• Syrups are dissolved in the water to make
drinks.
• Salt, sugar and other condiments are
dissolved in liquids when we cook.
Uses of solutions in Industries
• Dyes are dissolved in water to produce
colourful fabrics.
• Oils from plants and flowers are dissolved in
alcohol to produce perfumes.
Types of solutions
State of
solute
State of
solvent
Examples of solution
solid
solid
Alloys
Bronze (tin dissolved in copper)
Steel (iron, carbon + others)
Brass (zinc dissolved in copper)
gas
gas
Air
(oxygen, carbon dioxide, noble gases dissolve
in nitrogen)
Types of solutions
State of
solute
State of
solvent
Solid
Examples of solution
Amalgam
( silver, tin, gold or copper dissolves in
mercury)
Sugar solution
Liquid
Liquid
(sugar dissolves in water)
Alcoholic drinks
(alcohol dissolves in water)
Gas
Aerated
(Gas dissolved in water)