1. Before Bell Rings Grab two papers from side table 1 person from each lab group log into the computer at your lab station

2. Plan for Today
Entry Task.
Variables with Gases.
Gay Lussac’s Law Lab

3. Moles + Stoic Test
If you need to take/complete the test from last unit, come by this week during PH, before, or after school.
Getting graded should be in this week

4. Cell Phones Don’t forget about the cell phone policy
I see it out, you put it in a paper bag.
Let me know if you need to have your phone out.

5. ETD
Sketch and Explain the Volume vs. Pressure Graph from last class.
What kind of relationship does the graph show?

6. ETD 40:
Sketch and Explain the Volume vs. Pressure Graph from last class.
What kind of relationship does the graph show?

7. ETD 40 ANS:
Sketch and Explain the Volume vs. Pressure Graph from last class.
What kind of relationship does the graph show?

8. Learning Targets
I can describe the relationship between temperature and pressure.
I can explain what absolute zero is.

9. Boyle’s Balloon Squeeze a Balloon
P vs. V
Big vs. Little
Balloon
Same 1 Breath

10. Boyle’s Law:
P1V1 = P2V2 Before1 and After2
Boyle’s Balloons

11. Write on: Consider this scenario…
A balloon with a set amount of air has a volume of 6 L at sea level (1 atm). The balloon is brought underwater where the pressure is now 3 atm.
Will the balloon’s V decrease or increase? Explain Why?
What will be the New V of the balloon?

12. Ans: Consider this scenario…
A balloon with a set amount of air has a volume of 6 L at sea level (1 atm). The balloon is brought underwater where the pressure is now 3 atm.
Will the balloon’s volume decrease or increase? Explain why this makes sense.
What will be the new volume of the balloon?
P1V1 = P2V2  (1 atm) (6 L) = (3 atm)(V2)
V2 = 2 L

13. Direct vs. Inverse Relationships
Relationships between two variables can be direct or inverse.
Direct relationship
One goes up, the other goes up
Represented by one variable divided by the other = constant (k)
Inverse Relationship
One goes up, the other goes down
Represented by the variables multiplied together = constant (k)

14. Gas Law Variables How can we measure & manipulate these variables?
Pressure = P
Temperature = T
Volume = V
Moles = n

15. Temperature & Absolute Zero
Heat something = Add Energy  Atoms move _________!
Cool something = Remove Energy  Atoms move ________!
You can keep adding E (kinda), but Limit to how much E you can take away 
Limit to how “Cold” something can be.
ABSOLUTE ZERO  -273°C or 0 K
FASTER
SLOWER

16. Converting Kelvin to Celsius
Kelvin Avoids Negative Numbers:
0 K = -273°C
K = °C
°C = K -273
-273°C
0°C
25°C
50°C
0 K
273 K
298 K
323 K
25 K
50 K

17. Vernier Exp7: Gay Lussac’s Law Lab

18. Pressure-Temperature Gas Lab Gay Lussac’s Lab
1. Determine the relationship between P vs T
2. Get the following data.
3. Use this data, come up with a formula for the absolute relationship
Pressure
(kPa)
Temp
(ₒC)
(K)
Constant, k
(P / T )
Constant k
(P•T)
0.5 20 50 85
On Data Sheet:
1. Hand Draw 2 Graphs:
1 Celsius + 1 Kelvin
Graphs Labeled, + Explained.
2. Provide Micro Drawings that Explain Graphs
4. Answer All 4 Questions on Page 4

19. Follow the Directions 2018 They are very clear
P sensor into CH1
Valve 1st Open then Close
Press and twist stopper
ClickFileOpen
Chemistry with Vernier
 07 Pressure-Temperature
Must Hold Down Stopper
For Entire Experiment
Finger Yoga (take turns)
Hand Draw 2 Graphs

20. Learning Targets
I can describe the relationship between temperature and pressure.
I can explain what absolute zero is.

21. Homework Boyle’s Law Lab – Due next class.
Notebook Check – Due next class.
Pressure vs. Temp Lab – Due class after next.