1. Boyle’s Law Online Lab

2. Evaluation/Assessment:
Objective:
Today I will be able to:
Explain the behavior of gases
Correctly convert between different units of pressure, temperature and volume
Analyze the relationship between pressure and volume of gases in Boyles Law by constructing a graph
Correctly solve Boyle’s Law Problems
Evaluation/Assessment:
Informal Assessment – Monitoring student interactions as they complete the online lab and practice problems
Formal Assessment – analyzing student responses to the exit ticket, online lab and practice problems
Common Core Connection
Use technology and digital media strategically and capably
Make sense of problem and persevere in solving them
Look for and express regularity in repeated reasoning

3. Lesson Sequence Evaluate: Warm – Up Explain: Intro to gases Notes
Engage and Explore: Boyles Law Online Lab
Explain: Boyle’s Law Notes
Elaborate: Boyles Law Practice
Evaluate: Exit Ticket

4. Warm - Up Brainstorm a list of everything that you know about gases
What are some examples of common gases?

5. Objective Today I will be able to: Explain the behavior of gases
Correctly convert between different units of pressure, temperature and volume
Analyze the relationship between pressure and volume of gases in Boyles Law by constructing a graph
Correctly solve Boyle’s Law Problems

6. Homework
Finish Boyle’s Law Online Lab
Finish Boyles Law Practice

7. Agenda Warm – Up Intro to Gases Notes Boyles Law Online Lab
Boyles Law Notes
Boyles Law Practice
Exit Ticket

8. Intro to Gases Notes

9. What do we remember about gases?
Molecules are rapidly moving past or colliding with each other
Take the shape of the container they are in
No definite volume

10. Gas Laws
Study of the relationships between pressure, volume, temperature, and amount of gases in a system

11. Units Temperature Volume Pressure Pressure Conversions
Must be measured in Kelvin
oC + 273
Volume
mL or Liters
Pressure
Atm
Torr
mmHg
Pascals (kPa)
Pressure Conversions
1 atm = 760 mmHg
1 torr = 1 mmHg
1 atm = kPa

12. What is STP? Standard Temperature and Pressure Pressure = 1 atm
Temperature = 273 K

13. Explains the relationship between pressure and volume of a gas
Boyle’s Law
Explains the relationship between pressure and volume of a gas

14. Boyle’s Law Online Lab
Visit the link to view the simulation for Boyle’s Law and derive the relationship. Enter the data in the data table. Make a graph and answer the questions.

15. Boyle’s Law

16. Boyle’s Law
If the pressure of a gas is increased, the volume is decreased
Temperature remains constant
This is an inverse relationship
P1V1 = P2V2

17. Boyle’s Law (740.0)(16.0) = (550.0)(V2) V2 = 21.5 L
Example: L of hydrogen gas exerts a pressure of mm Hg at standard temperature. At what volume will the gas exert a pressure of mm Hg? (Be sure your units of volume and pressure agree!)
(740.0)(16.0) = (550.0)(V2)
V2 = 21.5 L

18. Boyle’s Law Practice
Complete the practice at your desk. Whatever is not finished will be your homework.

19. Exit Ticket
Why did all 4 of the gases have the same values for pressure and volume?
Why does volume increase as pressure decreases?
Why should scuba divers be concerned with Boyle's Law?