1. Filtering Lv4: Describe the term filtering.
Lv5: Model filtering using the particle model.
Lv6: Analyse why some solids cannot be removed by filtering.
Entrance Activity
Complete the table below by working out the masses of solute and solvent that make up the solution. (NO CALCULATORS)
Mass of solute
Mass of solvent
Mass of solution
____g
17g
21g
16.3g
40g
_____g
15.1g
36.1g
22.6g
48.8g
86.3g
106.5g

2. Filtering Lv4: Describe the term filtering.
Lv5: Model filtering using the particle model.
Lv6: Analyse why some solids cannot be removed by filtering.
Entrance Activity
Complete the table below by working out the masses of solute and solvent that make up the solution. (NO CALCULATORS)
Mass of solute
Mass of solvent
Mass of solution 4g
17g
21g
16.3g
40g
56.3g
15.1g
36.1g
51.2g
22.6g
26.2g
48.8g
20.2g
86.3g
106.5g

3. Can it be separated by filtration? Yes or No
Key Word Alert!
Filtering
The process of removing an insoluble solid from a liquid.
Mixture
Can it be separated by filtration? Yes or No
Salt and Water
Sand and Water
Sugar and Water
Stones and Water

4. Filtering Lv4: Describe the term filtering.
Lv5: Model filtering using the particle model.
Lv6: Analyse why some solids cannot be removed by filtering.
Entrance Activity
Complete the table below by working out the masses of solute and solvent that make up the solution. (NO CALCULATORS)
Mass of solute
Mass of solvent
Mass of solution 4g
17g
21g
16.3g
40g
56.3g
15.1g
36.1g
51.2g
22.6g
26.2g
48.8g
20.2g
86.3g
106.5g

5. Learning Activity
Draw the filtration diagram into your books. The label all of the equipment show in the diagram.
Flask
Funnel
Filter paper
Beaker
Once complete, show your teacher and he/she will give you the equipment to set up your filtration. (Do not start filtering until your teacher says to do so)

6. Create a mixture to filter by mixing water and sand together.
Learning Activity
Create a mixture to filter by mixing water and sand together.
Stir the mixture and slowly pour in into your filter paper. (Do not let it over flow the filter paper)
Continue to do this until you have filtered all of your mixture.
Once complete show your teacher, then he or she will give your directions for packing up.

7. Learning Activity
Filtration Diagram
Improve your diagram by adding on any of the missing parts shown in this diagram.
Peer Assessment
Has your partner used a ruler?
Has your partner labelled everything correctly?
Check for spellings.

8. Filtering Lv4: Describe the term filtering.
Lv5: Model filtering using the particle model.
Lv6: Analyse why some solids cannot be removed by filtering.
Entrance Activity
Complete the table below by working out the masses of solute and solvent that make up the solution. (NO CALCULATORS)
Mass of solute
Mass of solvent
Mass of solution 4g
17g
21g
16.3g
40g
56.3g
15.1g
36.1g
51.2g
22.6g
26.2g
48.8g
20.2g
86.3g
106.5g

9. Before Filtering After Filtering
Draw the before and after filtering diagrams in your books. Then complete the after filtering diagram.
Learning Activity
Before Filtering
After Filtering
Sand Molecule
Sand Molecule
Water Molecule
Water Molecule

10. Before Filtering After Filtering Residue Filtrate
Draw the before and after filtering diagrams in your books. Then complete the after filtering diagram.
Learning Activity
Before Filtering
After Filtering
Residue
Filtrate
Sand Molecule
Sand Molecule
Water Molecule
Water Molecule

11. Filtering Lv4: Describe the term filtering.
Lv5: Model filtering using the particle model.
Lv6: Analyse why some solids cannot be removed by filtering.
Entrance Activity
Complete the table below by working out the masses of solute and solvent that make up the solution. (NO CALCULATORS)
Mass of solute
Mass of solvent
Mass of solution 4g
17g
21g
16.3g
40g
56.3g
15.1g
36.1g
51.2g
22.6g
26.2g
48.8g
20.2g
86.3g
106.5g

12. HINT! “Think about size”
Learning Activity
Water
Molecule
Dissolved salt
Particle
Sand
Molecule
Filtering only removes insoluble substance. Using your understanding of particles, analyse why soluble particles aren’t removed by filtering but insoluble ones are. You may wish to refer to your particle diagrams above.
HINT!
“Think about size”

13. Filtering Lv4: Describe the term filtering.
Lv5: Model filtering using the particle model.
Lv6: Analyse why some solids cannot be removed by filtering.
Entrance Activity
Complete the table below by working out the masses of solute and solvent that make up the solution. (NO CALCULATORS)
Mass of solute
Mass of solvent
Mass of solution 4g
17g
21g
16.3g
40g
56.3g
15.1g
36.1g
51.2g
22.6g
26.2g
48.8g
20.2g
86.3g
106.5g

14. Plenary Three things I have learnt today in class-
Assessment Activity
Plenary
Three things I have learnt today in class-
Two things my partner has learnt today in class-
One thing I need to remember for my exam-