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What did you drink this morning?

What did you drink this morning?. Recap on previous lesson. Give the meaning of soluble substance Substance which can dissolve Examples of soluble substances Salt and sugar. Recap on previous lesson. Give the meaning of insoluble substance Substance which does not dissolve

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What did you drink this morning?

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  1. What did you drink this morning?

  2. Recap on previous lesson Give the meaning of soluble substance Substance which can dissolve Examples of soluble substances Salt and sugar

  3. Recap on previous lesson Give the meaning of insoluble substance Substance which does not dissolve Examples of insoluble substances Sand and chalk

  4. FILTRATION

  5. Objectives of the lesson At the end of this lesson, you should be able to: • state the meaning of filtration; • identify and label the apparatus or materials required for filtration and • identify and state the meaning of residue and filtrate.

  6. Activities • Divide into two groups • Group A: Practical activities on filtration Group B: Completing notes on filtration • After ten minutes, swap the activities

  7. Materials required • 1 retort stand and clamp • 1 beaker • 1 plastic cup • 1 plastic spoon • 1 filter funnel • 1 filter paper • Some tea leaves • Some water

  8. After the practical work, make sure you: • return all CLEAN apparatus properly to the teacher’s bench • wipe your bench dry • throw the used filter paper and the tea leaves into the dustbin

  9. Practical Activity: Filtration 1. Add some tea leaves to a beaker of water. Stir. Do the tea leaves dissolve? _______________

  10. 2. Fold a piece of filter paper like this:

  11. 3. Set up the apparatus as shown below.

  12. (a) Label A to D: A: ____________ C: ____________ B: ____________ D: ____________ (b) Pour the mixture of tea leaves and water into the filter funnel. (c) The tea leaves are now in the __________________. The insoluble solid left on the filter paper is called the ___________________.

  13. (d) The water is now in the ______________________. The liquid that passes through the filter paper is called the _______________. (e) To separate the tea leaves, we __________________ the mixture. • An insoluble solid is separated from a liquid by _______________. (g) Label X and Y. X: ___________ Y: ___________

  14. Notes on Filtration 1. Filtration is the process of separating an _________________ solid from a ________________ with the help of a filter paper.

  15. 2. The apparatus used for filtration is shown below.

  16. (a) Label A to D: A: ____________ C: ____________ B: ____________ D: ____________ (b) X is the ____________________ solid left on the filter paper. X is called the ___________________. (c) Y is the ____________________ that passes through the filter paper. Y is called the ___________________.

  17. SUMMARY • Filtration is the process of separating an insoluble solid from a liquid with the help of a filter paper.

  18. Apparatus or materials required for filtration:

  19. RESIDUE – the insoluble solid left on the filter paper FILTRATE – the liquid that passes through the filter paper

  20. NEXT CLASS How will you separate a soluble solid from a liquid?

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