Soluble vs insoluble

Do all Solutes dissolve in a solvent?

1. DO ALL SOLUTES DISSOLVE IN A SOLVENT? Prepared by: Kristine Ann B. de Jesus Teacher I Inlagadian Elementary School

2. I T’ S O U R S C I E N C E T I M E!

3. I T’ S O U R S C I E N C E T I M E! It’s Our Science Time (2x) What shall we do during Science Time? We observe, we compare We use our eyes and we use our ears Hands and nose and tongue (Repeat)

4. REVIEW

5. DO ALL SOLUTES DISSOLVE IN A SOLVENT?

6. Group Activity

7. Work Cooperatively & Silently

8. Group Activity 1: Problem: DO ALL SOLUTES DISSOLVE IN A SOLVENT Materials: plastic glass, water, spoon, stirrer, flour Procedure: 1 . Prepare a glass 2 . Fill the glass with half-filled water. 3 . Add a spoonful of flour into the glass then stir . 4 . Observe and describe what happens.

9. Guide Questions: 1 . Did the solids used dissolve in water ? Why ? Why not? 2 . How many phases did you observe ? 3 . What type of mixture is shown in the activity ?

10. Group Activity 2: Problem: DO ALL SOLUTES DISSOLVE IN A SOLVENT Materials: plastic glass, water, spoon, stirrer, sand Procedure: 1 . Prepare a glass 2 . Fill the glass with half-filled water. 3 . Add a spoonful of sand into the glass then stir . 4 . Observe and describe what happens.

11. Guide Questions: 1 . Did the solids used dissolve in water ? Why ? Why not? 2 . How many phases did you observe ? 3 . What type of mixture is shown in the activity ?

12. Group Activity 3: Problem: DO ALL SOLUTES DISSOLVE IN A SOLVENT Materials: plastic glass, water, spoon, stirrer, sugar Procedure: 1 . Prepare a glass 2 . Fill the glass with half-filled oil. 3 . Add a spoonful of sugar into the glass then stir . 4 . Observe and describe what happens.

13. Guide Questions: 1 . Did the solids used dissolve in water? Why ? Why not? 2 . How many phases did you observe ? 3 . What type of mixture is shown in the activity ?

14. Group Activity 4: Problem: DO ALL SOLUTES DISSOLVE IN A SOLVENT Materials: plastic glass, water, spoon, stirrer, salt Procedure: 1 . Prepare a glass 2 . Fill the glass with half-filled water. 3 . Add a spoonful of salt into the glass then stir . 4 . Observe and describe what happens.

15. Guide Questions: 1 . Did the solids used dissolve in water? Why ? Why not? 2 . How many phases did you observe ? 3 . What type of mixture is shown in the activity ? Soluble and insoluble materials - Experiment - Elementary Science[via torchbrowser.com].mp4

16. Substances that dissolve in water are crystalline and have a grainy texture

17. Substances that do not dissolve in water have a powdery and dry texture since they are not crystalline.

18. Substances dissolve each other if they LIKE each other . We call them SOLUBLE . “likes dissolve likes ” Ex. Polar to Polar Positive to Positive Negative to Negative

19. Solids that do not dissolve in water are called INSOLUBLE materials. They do not like each other. Ex. Positive to negative Polar to Non-Polar Some insoluble solids that spread throughout the liquid making it appear cloud are called SUSPENSION .

20. Do all solids dissolve in liquids? What do you call the solids that do not dissolve in liquids? What about those that solids that spread throughout the liquids making it cloudy?

21. Why do medicine suspensions need to be shaken before they can be taken?

22. Because it is called a "suspension" drug, this means the drug is in a suspension vehicle and it will settle when left alone. So it has to be shaken to disperse the drug through the syrup. If you took it without shaking, you just got the plain syrup and most of the medicine was probably settled at the bottom of your container.

23. DO ALL SOLUTES DISSOLVE IN A SOLVENT?

24. Direction: Write  if it dissolves in liquid and  if it does not dissolve. 1. Pebbles 7. P alay grains 2. Salt 8 . Cofee powder 3. Cotton balls 9. M onggo seeds 4. Detergent powder 10 . vetsin 5. Gravel 6. Milk powder

25. Identify materials at home that are suspension or insoluble materials. List at least 3 each ASSIGNMENT: