This document discusses mixtures and separation processes. It covers: 1. Methods to separate solid mixtures including magnetic attraction, filtration, and evaporation. 2. Separation of immiscible liquid mixtures using a separating funnel. 3. Definitions of solution, solute, and solvent. A solution is a mixture where a solute dissolves and spreads through a solvent. 4. Factors that affect the solubility process including quantity of solvent, temperature, stirring, and type of solute. Increasing these factors can increase the speed of dissolution.

1. Mixtures
Unit 2
Lesson 1

2. 2
Separation of mixtures
1- magnetic attraction :
Is used to separate solid
mixtures that contain magnetic
materials
Ex, mix of sand and iron fillings
2- filtration process:
Is used to separate solid
materials that are insoluble in
water
Ex , mixture of sand and water

3. 3
Separation of mixtures
3-Evaporation process:
Is used to separate solid mixtures that
are soluble in water Ex, mix of salty
solutions.
4-separating funnel
Is used to separate immiscible liquid
mixtures whose components don’t mix
together.
Ex , mixture of oil and water

4. 4
Complete :
1-mixture of iron and sand can be separated by …………………..
2-separating funnel is used to separate
3-mixture of sand and water can be separated
4-mixture of salt and water can be separated by …………………..
magnetic
attraction
immiscible liquid mixtures
filtration process
Evaporation process:

5. solutions Lesson 2
Unit 2

6. What is the difference between 2
figures?
When a solid substance
dissolves in water , a
solution is formed .6
Particles of salt are
not seen after stirring
Particles of mud are
seen after stirring

7. Solvent
It is the substance in
which solute dissolves
such as,
water, alcohol and
benzene,…….
Formation of solutions
solution consists of :
Solute
It is the substance which
dissolves in solvent
Such as ,
Salt,sugar,……
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8. Solution
It is a mixture in which solute
breaks down into particles and
spread throughout the solvent.
Such as salty solution, apple
juice and tea
8
Water is a common solvent (G.R)
Because it dissolves many substances

9. 9
What is meant by :
1-solution
………………………………………………
2-solute
………………………………..
3-solvent
……………………………………
It is a mixture in which solute breaks down into particles and spread throughout
the solvent.
Such as salty solution, apple juice and tea
It is the substance which dissolves in solvent
such as ,
Salt,sugar,……
is the substance in which solute dissolves such as
water, alcohol and benzene,…….

10. Solubility process :
10
▸ It is the process by which a solute dissolves in solvent
leading to the disappearance of the solute
Solubility process
Solute + Solvent Solution

11. Substance can be classified according to their
solubility into:
A soluble substance
it is the substance that
dissolves in a solvent
Example:
Salt in salty solution
An insoluble
substance
It is the substance that does
not dissolve in a solvent
Example:
Mud in water
11

12. Factors affecting the solubility process
12
Stirring3
Temperature2
Quantity of solvent1
The type of
solute
4
Increasing the quantity of solvent, the solubility
speed increase
Increasing the temperature, decreases the
dissolving time
Stirring increases the solubility
Dissolving time depends on the kind of matter

13. 13
Complete :
1-the process by which a solute dissolves in solvent leading to the
disappearance of the solute…………………
2-Substance can be classified according to their solubility into:
………………….
………………....
3-factors that affect solubility process……………………………………………
……………………………………
……………………………………
…………………………………….
Solubility process :
A soluble substance
An insoluble substance
Quantity of solvent
Temperature
Stirring
The type of solute

14. Place your screenshot here
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Quantity of
solvent
1
When we get 2 equal quantity of
sugar and put in the first beaker
around 300 ml and the other one 50
ml and with stirring we notice that it
takes shorter time in 300ml beaker
to dissolve
Increasing the quantity of solvent,
the solubility speed increase

15. ▸ When we put 2 equal amount
of sugar in the same amount
of water and by heating one
of them only
▸ We notice that sugar
dissolved faster in the one we
heated
15
Temperature2
Increasing the temperature, the
solubility speed increase the
solubility time decrease.

16. when we put equal amount of
sugar in 2 beaker containing the
same amount of water
And by stirring in one only
We notice that the sugar dissolved
faster in the one we stirred
16
Stirring3
Stirring increase the solubility speed
process

17. ▸ When we put amount of table
salt in beaker and the other one
contains the same amount of
sodium carbonate and heat
them with stirring
▸ We notice that table salt
dissolved faster
17
The type of
solute
4
Dissolving time depends on the
kind of solute

18. 18
Choose :
1-Factors affecting solubility process.
a. Quantity of solvent c. Stirring
b.Temperature d. All the previous
2-Sugar dissolves faster in water by......................
a.Stirring b. Increasing the amount of water
b.cooling d. (a) & (c)
3-All the following decreases dissolving time except…...
a.increasing temperature c. Increasing amount of solvent
b.Increasing amount of solute d. Stirring
Put true or false
Stirring decreases the solubility time ( )True

19. Factors to decrease the solubility time
▸ 1- heating (temperature)
▸ 2-stirring
▸ 3- increasing the amount of solvent
▸ 4-grinding the solid materials
19

20. Which dissolves faster sugar cubes or powdered
sugar .?
▸ Powdered sugar dissolves faster than
Sugar cubes ,
Because ,Grinding of solid material gives
a larger surface area exposed to the solvent
that makes the solubility process gets faster.
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