Collision Theory related to Science under Physics

Slide Presentation about collision theory

1. PHYSICAL SCIENCE 12

2. PHYSICAL SCIENCE 12

3. C llision the ry

4. C llision The ry

5. LEARNING COMPETENCY Use simple collision theory to explain the effects of concentration, temperature, and particle size on the rate of reaction ( S11/12PS-IIIf-23)

6. LEARNING COMPETENCY Use simple collision theory to explain the effects of concentration, temperature, and particle size on the rate of reaction ( S11/12PS-IIIf-23)

7. LEARNING OBJECTIVES Define collision theory Describe how it affects the chemical reaction Explain the different factors affecting the rate of reaction.

8. LEARNING OBJECTIVES Define collision theory Describe how it affects the chemical reaction Explain the different factors affecting the rate of reaction.

9. LET’S PLAY!!!

10. LET’S PLAY!!!

11. BOWLING WITH A TWIST

12. BOWLING WITH A TWIST You will be divided into 2 groups Each group will be given two balls each. The group will form pairs. Each pair will be facing each other with 2 meter distance. The pair will be given a ball each.

13. They will roll the ball to make it collide. Once it collides it will be counted as 1 point. The team that has more points will be hailed as the winner. BOWLING WITH A TWIST

14. THE GAME STARTS NOW!

15. BOWLING WITH A TWIST QUESTIONS: What have you observed with the balls that collided?

16. BOWLING WITH A TWIST DISCUSSION Balls collide if they were facing in the correct position and has enough force.

17. LET’S FIND OUT MORE!

18. ‘ Do all collisions between particles result in a reaction?

19. No, all collisions between particles do not result in a reaction.

20. ‘ What is necessary for a reaction to take place?

21. COLLISION THEORY particles must collide sufficient energy correct orientation

22. particles must collide sufficient energy correct orientation Substances or particles of reactants must physically collide.

23. particles must collide sufficient energy correct orientation Substances or particles of reactants must physically collide.

24. sufficient energy correct orientation 2. Substances or particles of reactants must have enough energy.

25. correct orientation Substance or particles must come into contact or collide in the correct orientation (facing the correct way).

26. THE COLLISION THEORY Therefore, any factor which changes the frequency or energy of the collisions will change the rate of the reaction.

27. THE COLLISION THEORY

28. THE COLLISION THEORY

29. THE COLLISION THEORY

30. ‘ What are the factors affecting the rate of reaction?

31. What is a Chemical Reaction? When two particles collide, sometimes a chemical reaction can occur, which means the bonds between two or more particles are broken and reformed, creating one or more new substances.

32. What is a Chemical Reaction? Let us look at the chemical reaction in photosynthesis:

33. CHEMICAL REACTION particles must collide sufficient energy correct orientation

34. ‘ What are the factors affecting the rate of reaction?

35. FACTORS AFFECTING THE RATE OF CHEMICAL REACTION Activation Energy Temperature Concentration Surface Area And Particle Size

36. FACTORS AFFECTING THE RATE OF CHEMICAL REACTION Activation Energy Temperature Concentration Surface Area And Particle Size The activation energy refers to the minimum energy required for a reaction to take place. When a collision provides energy equal to or greater than the activation energy, product can form.

37. Factors Affecting the Rate of Reaction

38. FACTORS AFFECTING THE RATE OF CHEMICAL REACTION Temperature Temperature Concentration Surface Area And Particle Size The rate of a chemical reaction increases with increasing temperature. As the temperature increases, collision between atoms and molecules becomes faster resulting to build up of more energy.

39. Factors Affecting the Rate of Reaction

40. Factors Affecting the Rate of Reaction Let’s try to apply…

41. FACTORS AFFECTING THE RATE OF CHEMICAL REACTION Concentration Temperature Concentration Surface Area And Particle Size If the concentration of the reactant is increased, the rate of reaction also increases. When the number of particles of the reactant is increased, there is a great chance for particles to collide.

42. Factors Affecting the Rate of Reaction

43. FACTORS AFFECTING THE RATE OF CHEMICAL REACTION Surface Area And Particle Size Temperature Concentration Surface area is the measure of how much exposed area a solid object has, expressed in square units.

44. Factors Affecting the Rate of Reaction

45. Factors Affecting the Rate of Reaction Increasing a reactant's surface area exposes reactive particles. So, the reactants are more likely to successfully collide! When a reactant has a small surface area, it’s harder for the reactants to interact. There are fewer successful collisions. So, increasing a reactant's surface area increases the reaction rate

46. Activity 1 Activity 1.1 Factors affecting Reaction Rates The rate at which reactants are consumed and products are formed during chemical reactions vary greatly. In this part of the module, you will discover how the different factors, such as concentration, temperature and particle size affect the rate of chemical reactions.

47. Activity 1 The following video links are experiments that you will watch and observe before answering the “Activity Assessment.” A. Effects of concentration: https://www.youtube.com/watch?v=o_TJEHzjBLM B. Effects of Temperature: https://www.youtube.com/watch?v=izqJkdj1d4U Figure 1 Figure 2 11 C. Effects of Particle Size: https://www.youtube.com/watch?v=kQtKRBL3rJY

48. Activity 1

49. Activity 2

50. Activity 3

51. PART A. MODIFIED TRUE OR FALSE Directions: Write the word TRUE if the statement is correct. If the statement is FALSE, change the italicized word to make the statement correct. _______________1. Decreasing the concentration of the reactants increases the collision frequency between reacting particles. Evaluation

52. _______________2. Increasing the concentration of a substance increases the kinetic energy of the particles that make up the substance. _______________3. Increasing the surface area of the reactant, increases the rate of the reaction. Evaluation

53. _______________4. Raising the temperature of the reaction increases the rate of the reaction by increasing the energy of the collisions between reacting particles. _______________5. If the reactant particles collide with less than the activation energy, the particles bounce back and no reaction will occur. Evaluation

54. PART B. IDENTIFICATION Directions: Identify what factor affects the rate of chemical reaction in the following situations. Use the choices below by writing the correct letter before the number. Evaluation

55. Temperature B. Concentrations C. Particle Size ________6. The food was refrigerated. ________7. A coal dust explosion happen in mines. ________8. Acid rain erodes marble fast. ________9. Two antacid tablets neutralizes acids faster than one tablet. ________10. Kindling is used to start a fire. Evaluation PART B. IDENTIFICATION

56. Activity Now is the time for you to explore your knowledge about collision theory and the factors affecting the rate of chemical reaction. Only short answers are needed. 1. Use the collision theory to explain why a lump of sugar is better to use in hot cup of tea, but granulated sugar is better to use in iced tea. 2. Suppose you held a lighted match to a solid piece of wood and another match to a pile of wood shavings. Which form of wood would catch fire more easily and why?

57. References https://www.toppr.com https://www. slidetodoc.com https://chem.libretexts.org https://www. expii.com https://medium.com https://files.mtstatic.com https://www.youtube.com/watch?v=eSInI1xHvh4&t=3s https://www.youtube.com/watch?v=ebvtJCu33vM

58. DEVELOPMENT TEAM OF THE SLIDE DECKS FOR SCIENCE (SLIDES) LESSON Writer/Developer: MARIEL Z. NALANGAN Teacher I Content Editor: Technical Evaluator:

59. DEVELOPMENT TEAM OF THE SLIDE DECKS FOR SCIENCE (SLIDES) LESSON Management Team: BENEDICK Z. ZASPA District Science Coordinator JADE R. RUIZ Principal In-charge of the District MARY CHERRY LYNN M. TABERNILLA Education Program Supervisor – Science Technical Consultant MAHNNIE Q. TOLENTINO Education Public Supervisor, LRMDS Technical Consultant