SCIENCE 6 Prepared by: Louie S. Sug-ang Romana C. Acharon Central Elementary School General Santos City Division OBJECTIVES: 1. Describe solutions as homogeneous mixture and its uses 2. Write one sentence summary 3. Appreciate the uses of solutions REVIEW Yes or No. 1. Mixture is a combination of two or more substances without chemical reaction. 2. A homogeneous mixture has the same uniform appearance throughout. 3. A heterogeneous mixture consists of visibly different substances or phases 4. Air with smog is a homogeneous mixture. 5. Stainless steel is a homogeneous mixture. Question of the DAY What happens when solids are mixed with water? PROCEDURE 1. The students will be grouped into 4. 2. Setting the standards in group activity 3. Discussing the criteria in doing the activity. 4. Group Activity Activity 3: Mysterious Water. 5. Group Presentation ACTIVITY 3 MATERIALS: Chocolate powder Coffee powder Creamer Detergent soap Glasses (8 pieces) Powdered juice Powdered milk Spoon Sugar PROCEDURES: 1. Get samples of sugar, coffee, powdered milk, creamer, chocolate powder, powdered juice, and detergent soap and salt. 2. Prepare a spoon, 8 plastic cups, and water. Label the cups. 3. Fill half of each glass with water. 4. Mix the sample and water in each glass. 5. Describe what happens to the sample. Group 1: sugar & powdered coffee Pour the sugar sample into glass Pour the coffee sample into glass Group 2: powdered milk & creamer Pour the powdered milk sample into glass Pour the creamer sample into glass Group 3: chocolate powder & powdered juice Pour the chocolate powder sample into glass Pour the powdered juice sample into glass Group 4: powdered detergent soap & salt Pour the powdered detergent soap sample into glass Pour the salt sample into glass Guide Questions: 1. What solid materials were dissolved in water? 2. What do you call these solid materials? 3. Where can we use these solutions? Application EXAMPLES OF SOLUTIONS Generalization The students will make a sentence by choosing a word or phrase form the Venn Diagram. Generalization Evaluation Choose the letter of the correct answer. 1. Which is a homogeneous mixture? a. Oil and water b. Mix nuts c. Seawater d. Pebbles 2. There are five kinds of solution. Gas in liquid is one of it, therefore, which of the given example is one of the solution? a. Air and water b. Cola or Soft drink c. Oxygen and salt d. Rocks and solvent 3. Homogeneous mixture has the same properties. It means that the substances mixed thoroughly and after stirring, it appeared as one substance. You can no longer distinguish one component from the other. What is the other term for homogenous mixture? a. Solution b. Dissolution c. solute d. Solvent 4. Which is the best example of a solution? a. blood b. milk c. salt dissolved in water d. oil and vinegar mixed for salad dressing 5. Which of the following is an example of a solution? a. gelatin b. mashed potatoes c. a mixture of salt and water d. a mixture of corn starch and water that is heated until it thickens flour dough 6. The part of the solution that dissolves what is being put into the solution is called the: a. solvent b. solute c. precipitant d. mixture 7. Air is a solution of 78% nitrogen, 21% oxygen and 1% other gases. Which part of this solution is the solvent? a. air b. nitrogen c. oxygen d. other gases 8. Because water has a slightly positive end and a slightly negative it is referred to as a. a polar molecule b. a hydrophobic molecule c. a magnetic molecule d. a nonpolar molecule 9. Sterling silver contains 92.5% silver and 7.5% copper. Which substance is the solute? a. platinum b. silver c. copper d. solids do not form solutions 10. A liquid substance capable of dissolving other substances is called a a. solution b. solute c. dissolver d. solvent Assignment Identify 5 solution and its uses.