Q2: week 1 – 11/14 – 11/18
Jump to: Tuesday, Wednesday, Thursday, Friday
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_________________________________________ Jump to: Monday Homework
11/14 – Monday “B” Day
Main focus:
1. To Define vapor pressure, boiling, and normal boiling
2 factors that drives Boiling Point :
1) Atmospheric Pressure – If the force of gas particles already in the air above are colliding at the surface of the liquid then how easily a gas particle can escape the liquid phase depends on how much these particle are colliding on the liquid. Lower the atmospheric pressure and the boiling point will decrease. You will need less energy to escape if there is less force on top of you.
2) Intermolecular forces (IMF’s) – If a liquid evaporates very easy like butane (baggie demo Friday) then it does so because the temperature is low OR the IMF’s are very weak. If the IMF’s are weak then the liquid does not need a lot of heat (lower temperature) to overcome the force of collisions due to the atmospheric pressure.
1. Vapor pressure lesson – We will be studying intensive properties of liquids called vapor pressure.
a) boiling is relative – boiling is not based on temperature – baggie demo
– Intermolecular forces is a factor in boiling
LIquid Smear Demo
– atmospheric pressure is a factor in boiling- how do we know that is exists?
Vacuum demos:
a) Accordian Container demo
b) Boil water at room temperature.
2. Complete the classwork:
Vaporization Presentation:
Today’s Lesson:
Boiling depend on pressure- Room Temperature water Boiling Demo:
Boiling Cold Demo – Butane in a Baggie:
Boiling Cold Demo – Butane in a Baggie:
Vapor pressure of liquids Demo – The Smear Races:
Vapor pressure in a Paint Can – Liquid Nitrogen Demo:
End of Monday!!!
_______________________________________________________ Jump to: Tuesday Homework
11/15 – Tuesday “A” Day –
Main focus:
1. Complete the classwork:
3. Temperature and volume demonstration – Gas Law begin!.
Today’s Lesson:
Bubble wrap and the Vacuum Chamber: Proof that atmospheric pressure is present. Take it away and there is less force pushing in the plastic bubbles of air and thus these air bubble expand till they pop.
End of Tuesday!!!
________________________________________ Jump to: Wednesday Homework
11/16 – Wednesday – B Day – Lab
Main focus:
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Liquid Nitrogen notes:
N2(l) facts: boiling point/condensation point = -196ºC, 77 K, – 320 F
heat of vaporization = 199 J/g
Red line = nitrogen, Blue line = oxygen.
Pressure square demo with our 4th graders:
Todays Lesson:
Boyles Law Demo: Pressure decreases the volume increases – (inverse relationship).
Charles Law Demo: Temperature decreases the Volume decreases – (direct proportion)
There is no homework tonight!
___________________________________________ Jump to: Thursday Homework
11/16 – Thursday “A” Day
Period 9:
1. Continue with our classwork gas law packet. Page 2 – Charles Law.
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2. Temperature / pressure demo – egg in bottle
– Air Horn
Todays lesson:
Charles Law Demo: Temperature decreases the Volume decreases – (direct proportion)
Gay- Lussac’s Law Demo: Temperature decreases the Pressure decreases – (direct proportion)
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End of Thursday!!!
Egg in and Out of the Bottle – Pressure and Temperature are a direct proportion
Egg in and Out of the Bottle – Pressure and Temperature are a direct proportion
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11/17 – Friday – “B” Day
Main focus:
1. To calculate with the combined gas law formula
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2) Crush the can Demo –
Combined Gas law Formula animation:
Todays Lesson: