solute and solvent.pptxasdfghjghjklkjhgf

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1. Solute and Solvent

2. Learning Objectives By the end of this lesson, students will be able to: 1. Identify and explain the roles of solute and solvent in a solution using everyday examples. 2. Give examples of common solutes and solvents. 3. Describe how solutes and solvents interact to form a solution.

3. Engage (Warm-Up Activity) Think-Pair-Share: “What happens when you stir sugar into water?” Engage (Warm-Up Activity) Think-Pair-Share: Ask students, “What happens when you stir sugar into water?” Let them discuss in pairs and share with the class.

4. Guide Questions Does the sugar disappear? Where does it go? Can you get the sugar back? What might affect how fast it dissolves? Engage (Warm-Up Activity) Think-Pair-Share: Ask students, “What happens when you stir sugar into water?” Let them discuss in pairs and share with the class.

5. Scientific Concept to Highlight: Dissolving : Sugar dissolves in water, forming a solution. The sugar molecules spread out evenly among the water molecules. Engage (Warm-Up Activity) Think-Pair-Share: Ask students, “What happens when you stir sugar into water?” Let them discuss in pairs and share with the class.

6. Scientific Concept to Highlight: Physical Change : This is a physical change, not a chemical one—the sugar is still sugar, just in a different form. Engage (Warm-Up Activity) Think-Pair-Share: Ask students, “What happens when you stir sugar into water?” Let them discuss in pairs and share with the class.

7. Scientific Concept to Highlight: Factors Affecting Dissolution : Temperature, stirring speed, and amount of sugar can affect how quickly it dissolves. Engage (Warm-Up Activity) Think-Pair-Share: Ask students, “What happens when you stir sugar into water?” Let them discuss in pairs and share with the class.

8. Solute and Solvent https://youtu.be/i4lTvRNkRP4 Engage (Warm-Up Activity) Think-Pair-Share: Ask students, “What happens when you stir sugar into water?” Let them discuss in pairs and share with the class.

9. Key Concepts: Solute: The substance that is dissolved. Solvent : The substance that does the dissolving. Solution : A homogeneous mixture of solute and solvent.

10. Everyday Examples: Solution Solute Solvent Saltwater Salt Water Sweet tea Sugar Tea ( mostly water)

11. Simple Experiment: Dissolving Salt in Water Materials Needed - Clear glass or beaker - Tap water - Table salt - Spoon or stirrer - Optional: food coloring (to make it more visual)

12. Simple Experiment: Dissolving Salt in Water Procedure 1. Fill the glass halfway with water. 2. Add a teaspoon of salt to the water. 3. Observe what happens before stirring. 4. Stir the mixture gently with a spoon. 5. Watch as the salt disappears and the water becomes clear again.

13. Simple Experiment: Dissolving Salt in Water Observation - Before stirring, salt settles at the bottom. - After stirring, salt dissolves and disperses evenly in the water. - The water looks clear, but now contains dissolved salt — a solution.

14. Simple Experiment: Dissolving Salt in Water Explanation - Salt = Solute (substance being dissolved) - Water = Solvent (substance doing the dissolving) - The salt particles break apart and spread throughout the water, forming a homogeneous mixture.

15. factors affecting solubility  Temperature Stirring Particle size

16. factors affecting solubility  Temperature - Higher temperature increases solubility for most solid solutes.

17. factors affecting solubility  Temperature - When water is heated, its molecules move faster, allowing them to break apart solute particles more easily.

18. factors affecting solubility  Temperature - Example: Sugar dissolves faster in hot tea than in iced tea.

19. factors affecting solubility  2. Stirring (Agitation) - Stirring speeds up the dissolving process but doesn’t change the amount that can dissolve.

20. factors affecting solubility  2. Stirring (Agitation) - It helps distribute solute particles throughout the solvent more quickly.

21. factors affecting solubility  2. Stirring (Agitation) - Example: Stirring salt into water helps it dissolve faster than just letting it sit.

22. factors affecting solubility  3. Particle Size - Smaller particles dissolve faster because they have more surface area exposed to the solvent.

23. factors affecting solubility  3. Particle Size - Larger chunks take longer to dissolve.

24. factors affecting solubility  3. Particle Size - Example: Powdered sugar dissolves faster than sugar cubes.

25. Summary Factor Effect on Solubility Temperature Increases solubility of solids in liquids Stirring Speeds up the rate of dissolving (not the amount dissolved) Particle Size Smaller particles dissolve faster due to greater surface area

26. Instructions: Identify the Solvent to be used in the solution Solute Solvent 1. Salt 2. Sugar 3. Carbon dioxide 4. Ink 5. Acetic acid