Q1 week 2- SOLUTIONS
- 1. WEEK 2 Describe the appearance and uses of uniform and non- uniform mixtures. S6MT-Ia-c-1
- 2. DAY 1 Recall of Homogeneous and Heterogeneous Mixture
- 3. Homogeneous or Heterogeneous? 1. Milk 2. Buko juice 3. Halo-halo 4. Lemonade 5. Fruit salad
- 4. Question of the day? What are mixture? Heterogeneous and homogeneous mixtures?
- 6. DAY 2 Describe solutions as homogeneous mixture and its uses.
- 7. Review. YES OR NO? Raise YES if the mixture being described is homogeneous and not if its not. 1. A solid substance is dissolved in a liquid substance is a solution. 2. Alcohol and water is homogeneous. 3. Steel is an example of solid in solid mixture. 4. You can see two substance in solution. 5. Softdrinks is an example of gas in liquid mixture.
- 8. Question of the day: What happens when solids are mixed with water?
- 10. Activity 2.2 Mysterious Waters MATERIALS: Chocolate powder Coffee powder Creamer Detergent soap Glasses (8 pieces) Powdered juice Powdered milk Spoon Sugar
- 11. PROCEDURES: 1. Get samples of sugar, coffee, powdered milk, creamer, chocolate powder, powdered juice, and detergent soap. 2. Prepare a spoon, 8 drinking glasses, and water. Label the glasses 1 to 8. 3. Fill half of each glass with water. 4. Pour the sugar sample into glass 1. Pour the coffee sample into glass 2. Do this with the rest of the samples and glasses. 5. Mix the sample and water in each glass. 6. Describe what happens to the sample.
- 12. Guide Questions: 1. What solid materials were dissolved in water? 2. What do you call this solid materials?
- 15. When sugar is mixed with water, the sugar seems to disappear into the water. This is a process called dissolution. The sugar did not really disappear. Its molecules dissolved into the water that it can no longer be seen. The same happens with salt. You know that sugar and salt are still there because you can taste it, even though you cannot see it. The salt and sugar were dissolved completely into the water. This clear mixture is called solution.
- 16. The solid material like soap, powdered juice, powdered milk, chocolate powder, and others which is being dissolve is called solute. While the dissolving medium (ex. water ) is called solvent.
- 17. There are four types of solutions. All these types are homogeneous. 1. Solid in liquid A solid substance is dissolved in a liquid substance. Examples are sugar in water, salt in water, juice powder in water, or coffee in water.
- 18. 2. Liquid in liquid A liquid substance can also be dissolved in another liquid and these two substances can be mixed thoroughly. Examples of these are alcohol and water, wine and soda water, concentrated fruit juice in water, or liquid milk and water.
- 19. 3. Gas in liquid Certain liquids contain gaseous substances. Soft drinks appear as liquid, but they actually contain carbon dioxide gas. This can be observed when a bottle of soft drink is shaken or opened, bubbles appear and gas is released. Oxygen is also present in water. Plants use them during the food – making process. There is also oxygen in the blood,
- 20. 4. Gas in gas Air is a very good example of gas in a gas solution. It is a mixture of several gases– oxygen, nitrogen, carbon dioxide, and others. 5. Solid in solid Steel, basically a solution of carbon atoms in a crystalline matrix of iron atoms. Alloys like bronze and many others. Polymers containing plasticizers.
- 21. What is solution? Answer in one sentence.
- 22. Evaluation: 1. Give 2 more solids that easily dissolve in water.
- 23. Day 3 Perform Experiments affecting Solubility
- 24. REVIEW: Give one word that describes the following: 1. Solution 2. Solute 3. Solvent 4. Dissolution 5. Liquid
- 25. Analyze. If you were to drink coffee, will you choose granules or powder? Why? If you were to drink chocolate, what will you choose tablea or powder and why?
- 26. Activity 2.3 Speed Up My Solutions MATERIALS: Cold water Detergent powder Detergent soap Glasses Hot water Salt Spoon Sugar
- 27. PROCEDURES: Task 1 1. Prepare two drinking glasses half- filled with water. 2. Put one teaspoon of salt into each glass. 3. Stir the water in one glass. Do not stir the water in the other glass. 4. Observe what happens.
- 28. 5. Answer the following questions. Write the answers in your notebook. a. In which glass of water did the salt dissolve faster? b. What do you think will happen if you did not stir the water in the other glass? c. What made the salt particles dissolve faster? Why do you think this happened?
- 29. Task 2 1. Fill half of a drinking glass with cold water. 2. With the help of an adult, fill half of another glass with hot water. 3. Place one teaspoon of sugar in each glass. 4. Observe what happens. 5. Answer the following questions in your notebook. a. In which glass did the sugar dissolve faster? b. What made the sugar in one glass dissolves faster than sugar in the other glass? c. What factor affects the sugar to dissolve faster in one glass?
- 30. Task 3 1. Prepare two drinking glasses, a teaspoon of powder soap, and a small piece of a detergent bar. 2. Place equal amounts of water in the glasses. 3. Put the powdered soap in one of the glasses and the piece of detergent bar in the other glass. 4. Observe which solid dissolves faster. 5. Answer the following questions. Write the answers in your notebook. a. In which glass did the detergent dissolve faster? b. What factors affect the speed of solubility between the powdered soap and detergent bar?
- 31. Guide Questions: 1. How does stirring affect solubility? 2. How does crushing affect solubility? 3. How does temperature affect solubility?
- 34. Solubility is the ability of a solute to dissolve in a solvent at a given temperature. Usually the higher the temperature, the faster a solute can be dissolved in a solvent. The nature of solute and the amount of solvent also determine how fast the solute dissolves in a solvent. The size of the particles affects the dissolving process. The finer the particles are, the faster the solute dissolves. The manner of stirring is also a factor to dissolve a solute in a solvent.
- 35. Evaluation Match the factors affecting the solubility of the solute in a solvent in column A to the situations in column B. Column A 1. _____ Amount of solvent 2. _____Manner of stirring 3. _____ Size of the solute particles 4. _____ Temperature of the solvent 5. _____ Immiscibility Column B A. Dissolving coffee with coffee mate in a water using a spoon or a stick. B. Dissolving three tablespoons of milk powder in a glass of warm water. C. Mix baby oil with water. They do not mix completely with one another. D. Some grains of sugar settle at the bottom of the glass of the water while black coffee has already dissolved. E. A sachet of fruit juice powder dissolves in a half glass of water slower than in a pitcher of water.