BOYLE'S LAW W1 PPT.pptx this is about the boyles law

This presentation is all about Boyle's law which is the relationship between volume and pressure at constant temperature

1. GOOD AFTERNOON Hi! I am Teacher Ron!

2. PRAYER

3. MOTIVATION FACT OR BLUFF

4. Gases have low densities FACT BLUFF

5. Water vapor is a mixture of gas FACT BLUFF

6. Under the normal atmospheric conditions, there are only eight elements that are gases FACT BLUFF

7. Gases expand when more pressure is applied FACT BLUFF

8. Gases assume the volume and shape of their containers FACT BLUFF

9. ’

10. At the end of the lesson, the students must be able to: Investigate the relationship between volume and pressure at constant temperature of a gas Solve problems applying Boyle’s Law Give application of Boyle’s Law in real life situations. OBJECTIVES

11. UNLOCKING OF TERMS Boyle’s Law- is a gas law, stating that the pressure and volume of a gas have an inverse relationship. Volume- The amount of space occupied by a substance. Pressure- The force exerted per unit area . Temperature- A measure of the average kinetic energy of the particles in a substance, indicating how hot or cold it is. Gases- a fluid (such as air) that has neither independent shape nor volume but tends to expand indefinitely .

12. ACTIVITY

13. Roles Leader One who leads the group Secretary One who writes the answers of the group Reporter One who reports the output to the class Timekeeper One who monitors the time Members Will cooperate and participate in constructing ideas

14. Activity Rubrics

15. Group Presentation

16. ABSTRACTION

17. Robert Boyle in 1662 studied the relationship between the volume of a gas and its pressure. Boyle varied the pressure and noticed its effect on the volume of the gas, without changing its temperature. Who discover Boyle's Law?

18. Volume   is denoted by the symbol V and its SI unit is in  Liter (L); it can also be expressed in milliliters (mL), cubic meters ( ), and cubic centimeter ( ). Pressure is denoted by the symbol P . The SI unit used for pressure is Pascal (Pa). Temperature of a gas is generally expressed in Fahrenheit (°F), Celsius degree (°C), and Kelvin (K). The lowest attainable temperature known as absolute zero with a value of -273.15°C.  

19. Which of the following graph represents the correct Boyle’s Law?

20. What is Boyle’s law and what is its significance? Boyle’s law explains that when the pressure changes on a certain amount of gas, its size is inversely proportional to the pressure, provided that the temperature is constant. It is usually written as which is shown and described in figure 2 below.  

21. Example 1: A gas occupies a volume of 1 L and exerts a pressure of 400 Pa on the walls of its container. What would be the pressure exerted by the gas if it is completely transferred into a new container having a volume of 3 liters (assuming that the temperature and amount of the gas remain the same.)? P  2  = 133.33 Pa

22. Example 2: A sample of oxygen gas has a volume of 225 mL when its pressure is 1.12 Pa. What will the volume of the gas be at a pressure of 0.98 Pa if the temperature remains constant? V  2  = 257.14 mL

23. IT’S YOUR TURN!

24. Problem 1: A gas occupies 12.3 liters at a pressure of 40.0 Pa. What is the volume when the pressure is increased to 60.0 Pa?     Problem 2: A gas occupies 11.2 liters at 0.860 Pa. What is the pressure if the volume becomes 15.0 L?  8.20 L 0.642 Pa

25. APPLICATION QUIZ-BOYLE

26. CATEGORY Easy- 1 point (15 sec) Multiple Choice Average- 2 points (30 sec) Multiple Choice Difficult- 3 points (1 min) Solving Each category has 2 questions

27. EASY

28. 1. The relationship of which two variables are compared in Boyle's Law? a. pressure & volume b. volume & temperature c. temperature & pressure d. volume & moles (amount of gas)

29. 1. The relationship of which two variables are compared in Boyle's Law? a. pressure & volume b. volume & temperature c. temperature & pressure d. volume & moles (amount of gas)

30. 2. What type of relationship to pressure and volume have? a. direct b. inverse c. no relationship d. I don't know

31. 2. What type of relationship to pressure and volume have? a. direct b. inverse c. no relationship d. I don't know

32. AVERAGE

33. 3. What is the formula for Boyle's Law?

34. 3. What is the formula for Boyle's Law?

35. 4. A gas at a volume of 4 liters is at a pressure of 8 Pa. The volume is changed to 16 Liters, what must the new pressure be? a. 1 Pa b. 12 Pa c. 10 Pa d. 2 Pa

36. 4. A gas at a volume of 4 liters is at a pressure of 8 Pa. The volume is changed to 16 Liters, what must the new pressure be? a. 1 Pa b. 12 Pa c. 10 Pa d. 2 Pa

37. DIFFICULT

38. 5. A sample of carbon dioxide occupies a volume of 3.50 liters at 125 Pa pressure. What pressure would the gas exert if the volume was decreased to 2.00 liters?

39. 5. A sample of carbon dioxide occupies a volume of 3.50 liters at 125 Pa pressure. What pressure would the gas exert if the volume was decreased to 2.00 liters? 219 Pa

40. 6. A 2.0 liter container of nitrogen had a pressure of 3.2 atm. What volume would be necessary to decrease the pressure to 1.0 atm?

41. 6. A 2.0 liter container of nitrogen had a pressure of 3.2 atm. What volume would be necessary to decrease the pressure to 1.0 atm? 6.4 L

42. GENERALIZATION

43. ASSESSMENT

44. Direction: Read each item carefully and choose the letter of the best answer.   1. Which of the following is the standard unit of volume? a. liter b. mmHg c. second d. torr   2. Which of the following changes will result to a decrease in gas pressure? a. Adding more gas particles b. Increasing the temperature c. Liquefying the gas particles d. Increasing the volume of the container   3. Which gas law describes the relationship between pressure and volume at constant temperature? a. Avogadro’s Law b. Boyle’s Law c. Charles Law d. Gay-Lussac’s Law     4. Which of the following expresses an inverse proportionality? a. As n increases, P increases b. As n increases, V increases c. As P increases, V decreases d. As T decreases, P decreases   5. What is the value of absolute zero in degree Celsius ( °C )? a. 0 b. 273.15 c. 373.10 d. -273.15

45. Direction: Read each item carefully and choose the letter of the best answer.   1. Which of the following is the standard unit of volume? a. liter b. mmHg c. second d. torr   2. Which of the following changes will result to a decrease in gas pressure? a. Adding more gas particles b. Increasing the temperature c. Liquefying the gas particles d. Increasing the volume of the container   3. Which gas law describes the relationship between pressure and volume at constant temperature? a. Avogadro’s Law b. Boyle’s Law c. Charles Law d. Gay-Lussac’s Law     4. Which of the following expresses an inverse proportionality? a. As n increases, P increases b. As n increases, V increases c. As P increases, V decreases d. As T decreases, P decreases   5. What is the value of absolute zero in degree Celsius ( °C )? a. 0 b. 273.15 c. 373.10 d. -273.15

46. Assignment Direction: Research about Charles Law, explain how it describes the relationship between temperature and gas volume, and provide one real-life example with a brief explanation of how the law applies to it.

47. E