Phase Change.pptx

phase change of matter

1. PRAYER

2. REVIEW OF THE LESSON

3. MOTIVATION

4. PICTURE ANALYSIS

5. QUESTIONS 1. What is your observation about the candle before it is lighted in the figure 1? How about during the time the candle was lit? How about after putting out the flame of the candle? 2. What state of matter is the lighted candle when it melts? 3. What process takes place when solid state changes to a liquid state?

6. PICTURE ANALYSIS

7. QUESTIONS 1. What is your observation about the clothes before it dry? How about after letting wet clothes dry? 2. What state of matter is the wet clothes when it dry? 3. What process takes place when solid state changes to a gas/vapor state?

8. Direction: Identify the process of phase change as shown in each picture below. 1.

9. MELTING

10. Direction: Identify the process of phase change as shown in each picture below. 2.

11. EVAPORATION

12. Direction: Identify the process of phase change as shown in each picture below. 3.

13. CONDENSATION

14. Direction: Identify the process of phase change as shown in each picture below. 4.

15. MELTING

16. Direction: Identify the process of phase change as shown in each picture below. 5.

17. EVAPORATION

18. Direction: Identify the process of phase change as shown in each picture below. 6.

19. CONDENSATION

20. Direction: Identify the process of phase change as shown in each picture below. 7.

21. MELTING

22. Direction: Identify the process of phase change as shown in each picture below. 8.

23. EVAPORATION

24. Direction: Identify the process of phase change as shown in each picture below. 9.

25. CONDENSATION

26. Direction: Identify the process of phase change as shown in each picture below. 10.

27. CONDENSATION

28. GOOD JOB EVERYONE!

29. Phase Changes of Matter

30. 2 Learning Objectives 1 3 define phase changes identify the different Phase Change in Matter appreciate the importance of phase changes in our daily lives .

31. - is when matter changes to from one state (solid, liquid, gas, plasma) to another. Phase changes occur when energy (usually in the form of heat) is added to or removed from a substance , causing its particles to rearrange and its physical properties to change. PHASE CHANGES

32. \ Different Phase Changes In Matter

33. MELTING (SOLID TO LIQUID PHASE ) - Melting is the process by which a substance changes from the solid phase to the liquid phase. In the melting process, molecules became loosely packed (liquid phase) from being closely packed (solid phase). This happens when the energy (heat) is added to a solid to change its stage to liquid.

34. SOLID TO LIQUID PHASE

35. 2. EVAPORATION (LIQUID TO GAS PHASE ) - Evaporation is the process by which the matter undergoes the spontaneous transition from a liquid phase to a gas phase. In this process, the molecules of liquid with the addition of heat creates vapor where gas molecules spread out freely and moving constantly.

36. LIQUID TO GAS PHASE

37. 3. CONDENSATION (GAS TO LIQUID PHASE ) - Condensation, the opposite of evaporation, is the change in the state of matter from the gas phase to the liquid phase. The molecules may then collide with the inner surface of these molecules do so, some may stay on the accumulate and form droplets.

38. GAS TO LIQUID PHASE

39. 4.FREEZING (SOLIDIFICATION ) -The change from liquid to solid as a substance loses heat and reaches its freezing point, which is the same temperature as the melting point but in reverse direction.

40. FREEZING

41. 5. SUBLIMATION - The direct transition from solid to gas without passing through the liquid phase, occurring under certain temperature and pressure conditions. Dry ice (solid carbon dioxide) sublimating into carbon dioxide gas is a common example.

42. Dry ice (solid carbon dioxide) sublimating into carbon dioxide gas

43. 6. DEPOSITION -The direct change from gas to solid, by passing the liquid state, such as frost formation on cold surfaces from water vapor in the air.

44. Frost formation on cold surfaces

45. Guide Questions In our daily lives, identify activities/ situations that uses Phase Change in matter.

46. Guide Questions 1. What is the importance of phase change in our daily life? 2. How does phase change affect you as an individual? 3. What is the difference between the 3 basic phase change?

47. Guide Questions What is the chemistry term for a phase change when a solid becomes a liquid? What is the chemistry term for a phase change when a liquid becomes a gas? Describe the phase change that occurs during solidification (freezing). Describe the phase change that occurs during condensation.

48. ACTIVITY Direction: Identify the phase of matter and illustrate the atoms/molecules' arrangement and motion inside the two (2) boxes based on the given image, and then explain them on the space provided below .

49. TABLE 1

50. TABLE 2

51. TABLE 3

52. Thank you!

53. LABORATORY ACTIVITY: PHASE CHANGES OF MATTER

54. ACTIVITY: What changes take place when ice turns into liquid water?

55. Objectives After performing this activity, you should be able to : 1. Describe what happens to water when it is heated and cooled; 2. Represent through drawing/illustrations what happens to the particles of water when it is heated, then cooled, and ice when it turns to liquid 3. Explain the process taking place using the particle model of matter

56. Materials 2 pieces, ice cubes 1 piece watch glass or saucer

57. Procedure 1 . Put one piece of an ice cube on the watch glass or small saucer. 2. Observe what happens to the ice cubes after 2 minutes. 3. You may do any of the following: write a description or draw a cartoon or illustrate to show how the particles of water behave as ice changes to a liquid .

58. Guide Questions Q1. Explain what is happening to the particle of water in ice as it turns to liquid using the particle model of matter. Q2. Explain what will happen to the liquid on the watch glass or saucer if it is transferred into a small container and left inside the freezer after a few minutes?

59. RESOURCE PAGE