2. Unit: Reversible and Irreversible Changes Grade V Science Ms. Khaula Rizwan Mixtures & Solutions

3. MATTER is solid liquid gas melts to freezes to evaporates to condenses to anything that has mass and takes up space can be MATTER FACT Water can be found naturally on earth as a solid, liquid, and a gas.

4. MIXTURES Two or more kinds of substances combined together are solutions separated can be by using sieves using magnets evaporation sorting one kind of material dissolves in another made when cannot be separated by filtration which filtration

5. How would you separate a mixture of sand and water?

6. How would you separate a mixture of sand and water? ANSWER: Pour the mixture through a filter. The water will go through the filter leaving the sand behind. ANSWER: Pour the mixture through a filter. The water will go through the filter leaving the sand behind.

7. How would you separate a mixture of iron fillings and sand?

8. How would you separate a mixture of iron and sand? ANSWER: Use a magnet to separate the iron fillings from the sand. ANSWER: Use a magnet to separate the iron fillings from the sand.

9. How would you separate a mixture of salt and water? HINT: Salt and water form a solution. HINT: Salt and water form a solution.

10. How would you separate a mixture of salt and water? HINT: Salt and water form a solution. HINT: Salt and water form a solution. ANSWER: Heat the water until the water evaporates. The salt will be left behind in the dish or beaker. ANSWER: Heat the water until the water evaporates. The salt will be left behind in the dish or beaker.

11. Alright Young Scientists!! Now its time to understand some very important key words when we are learning about SOLUTION.

12. Solute Solvent Solution FOUR IMPORTANT KEY WORDS Saturation

13. Solute (salt) Solvent (water) A Salt Water Solution

14. Solute Any substance that dissolves in a liquid Can you give examples?

15. Solvent The liquid in which other substances can be dissolved Examples?

16. So how will you define solution? Solution

17. A mixture that is formed when two or more substances (solutes) are dissolved in the liquid (solvent). Solution= Solutes + Solvent Example: Sugar in water= Sugar + Water

18. In a salt water solution… Is salt the solute or the solvent? –Solute Is water the solute or the solvent? –Solvent What does the solute do? –Gets dissolved What does the solvent do? –Does the dissolving

19. INVESTIGATING SOLUTIONS 1. What is a saturated solution? _________________________________________ _________________________________________ _________________________________________ 2. How can you tell when a solution is saturated? _________________________________________ A solution in which no more solid material will dissolve; additional material settles to the bottom of the container (beaker/dish) I can tell when no more material will dissolve in the solution.

20. Which is a saturated solution? A B How do you know?

21. Which is a saturated solution? A B No more material will dissolve in solution A.

22. Lets Recap!

23. MATTER is can be

24. MIXTURES are Separated by can be by made when which