Science 6 Q1 lesson 8 DESCRIBE THE APPEARANCE AND USES OF SUSPENSION.pptx

Science

1. DESCRIBE THE APPEARANCE AND USES OF SUSPENSION Quarter 1: Lesson 8 MARICHU P. UBINA San Clemente Integrated School

2. ENGAGEMENT: Drill: Read the ff. words. 1. Suspension, 2. milk of magnesia 3. Mayonnaise 4. cotrimoxazole 5. appearance 6. miscibility 7. Substance

3. What are the factors affecting the solubility of solute in a solvent? Today we will find out what is the appearance of a suspension and tell its uses.

4. EXPLORATION Organize the class into small groups. Recall standards in conducting an activity. Distribute activity cards to each group and let them do the activity.

5. Activity 1: Describe the appearance and uses of suspensions Materials: ½ cup flour, 1 clear glass of water

6. Procedure: Prepare a half cup of flour, 1 clear glass with water. Pour the flour into the glass of water. Stir until the flour mix with the water. Wait for 2 – 3 minutes and observe. Record the appearance of the mixture

7. Questions: 1. When the solute particles mixed with water, what do they become? ( mixture) How do the solute particles behave after mixing with solvent?( settle at the bottom / float in the water) Describe the appearance of the mixture done. ( cloudy) What kind of mixture did you make? ( suspension) In what preparation can this mixture be useful? (food preparation as thickening agent) In which test tube did the chocolate powder dissolve faster? What made the chocolate powder in a certain test tube dissolve faster?

8. Conclusion: Answer the questions to come up a conclusion on the activity you have performed. 1. What is the name of the mixture that you make? ( gaw-gaw ) 2. Based on the appearance and characteristics, what type is this mixture? (suspension) 3. So therefore, what is a suspension and how can this be useful? (A suspension is a heterogeneous cloudy mixture in which solute-like particles settle out of a solventlike phase some time after their introduction. This gaw-gaw mixture can be used in food preparations as thickening agent.)

9. 3. So therefore, what is a suspension and how can this be useful? (A suspension is a heterogeneous cloudy mixture in which solute-like particles settle out of a solvent-like phase some time after their introduction. This gaw-gaw mixture can be used in food preparations as thickening agent.)

10. Activity 2: Describe the appearance and uses of suspensions Materials: 1 tablespoons of apple cider vinegar 3 tablespoon of olive oil, 1 clear glass (container)

11. Procedure: Put the oil in the glass and pour the vinegar after. Stir with a stick until it becomes a mixture. Wait for 2 – 3 minutes and observe. Record the appearance of the mixture.

12. Questions: 1. When the 2 ingredients are combined, what do they become? ( mixture) 2. Describe the appearance of the mixture done. ( cloudy) 3. What kind of mixture did you make? ( suspension) 4. In what preparation can this mixture be useful? (for vegetable salads) *see reference

13. Conclusion: Answer the questions to make a conclusion from the activity you performed. 1. What is the name of the mixture that you make? (oil and vinegar mixture) 2. Based on the appearance and characteristics, what type is this mixture? (suspension)

14. 3. So therefore, what is a suspension and how can this be useful? (A suspension is a heterogeneous cloudy mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction. This oil-vinegar suspension can be used in salads, marinades, sandwiches and other food preparations.) *see reference

15. Activity 3: Describe the appearance and uses of suspensions Materials: ½ cup of raw sand and 1 glass of water

16. Procedure: Add the sand to the water then stir the mixture well. Let the mixture stand for a few minutes. Observe and record what happen to the sand. Describe the appearance of the mixture.

17. Question: 1. When the solute (sand) is introduced to the solvent (water), what do they become? ( mixture) 2. Describe the appearance of the mixture done. ( cloudy, sand settled at the bottom) 3. What kind of mixture did you make? ( suspension) 4. In what preparation can this mixture be useful? (as construction material)

18. Conclusion: Answer the questions to make a conclusion from the activity you performed. 1. What is the name of the mixture that you make? (sand and water mixture) 2. Based on the appearance and characteristics, what type is this mixture? (suspension)

19. So therefore, what is a suspension and how can this be useful? (A suspension is a heterogeneous cloudy mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction. This sand-water mixture can be used as construction materials, such as forming hollow blocks when mixed with cement.)

20. EXPLANATION Posting / reporting activity result by group

21. Ask:  As you mix the solute particles in a solvent, what did you make?  How did the solute particles behave when mixed with the solvent?  Describe the appearance of the mixture you have done.  What kind of mixture did you make?  Describe the appearance of suspension.  Show other examples of suspensions then describe.  Give the uses of these suspensions: (for food, medicines, beautification, etc.)

22. ELABORATION Suspension is a heterogeneous mixture, which has particles that do not completely dissolve and settle down at the bottom. Suspensions are cloudy mixtures. Some substances do not dissolve completely in solvents. The particles that do not dissolve settle down at the bottom of the container. An example of mixture is sand and water used as construction materials. You had observed that particles settle down at the bottom of the glass. The particles do not spread evenly unlike the solution. This mixture is called suspension.

23. Flour mixed with water form a mixture and is used as thickening agent in food preparation. The particles of flour do not dissolve but float in the water. The mixture of flour and water is called a suspension.

24. A mixture of oil and vinegar form a suspension. The oil particles do not dissolve in vinegar. Instead, the vinegar slowly sinks to the bottom of the container. This mixture is used for vegetable salads, marinades and other food preparations. Some liquid medicines, like milk of magnesia that can be used as laxative and cotrimoxazole used as antibiotic are also suspensions.

25. Generalization:   What is a suspension?  Describe the appearance of suspension.  What are the uses of suspension?

26. Valuing Carlo had a fever. Her sister was instructed by Mother to give him a medicine. What should she observe and follow in order to avoid over dosage and poisoning?

27. Application Exercise A. Shopping Activity: Group the class into six. Each group will examine all the presented substances. Let them describe the appearance of the suspension. Tell the uses of each suspension. Write under the column for each suspension of what have they observed. Elaborate some more points to remember

28. EVALUATION Describe the appearance and uses of suspension listed below as: for Food, for medicine, for beautification Milk of magnesia Paint Gawgaw Mayonaise cotrimoxazole

29. Assignment Make a research on: 1 . Kinds of suspension 2. Tell if they are beneficial or harmful to man and to the environment.