11.1 Gas Laws
Presentation
•
Science
•
9th - 12th Grade
•
Hard
Standards-aligned
Stacy King
FREE Resource
15 Slides • 8 Questions
1
Gas Laws
School Announcements:
Boyle's Law
Charles’s Law
Avogadro’s Law
Ideal Gas Law
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3
4
Multiple Choice
5
6
Pressure: The amount of force applied per unit of area.
In gases, as pressure increases, volume decreases.
Why?
When the particles in a gas are compressed, they have less space to move around. As a result, the particles start to collide with one another more often — this increases pressure!
7
8
Pressure
⦿ Pressure- Force per unit area. Dependent on volume temperature. (Gas Laws)
1 atm
0.3 atm
0 atm
DOES AIR WEIGH ANYTHING?
9
Multiple Choice
When the area decreases what happens to the gas particles?
The pressure increases due to the applied force
The pressure decreases due to the applied force
The force and pressure are unrelated
10
Units of Pressure
Pascal - Pa (SI Unit)
Atmospheric – atm (we will use this unit)
Torr – torr
Millimeters of mercury – mmHg
Pounds per square inch - psi
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12
13
14
Multiple Choice
15
Multiple Choice
16
Volume and pressure have an INVERSE RELATIONSHIP.
If pressure increases, volume decreases (gas is compressed).
If pressure decreases, volume increases (gas is released/expands)
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18
P1 is initial Pressure
V1 is initial Volume
P2 is Final Pressure
V2 is Final Volume
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Match
P1
V1
P2
V2
Initial pressure
Initial volume
Final pressure
Final Volume
Initial pressure
Initial volume
Final pressure
Final Volume
20
Multiple Choice
The formula for BOYLE'S LAW is?
P1V1=P2V2
T1V1=T2V2
pV=nRT
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22
Multiple Choice
What happens to the balloon when the syringe plunger is pulled upwards?
The balloon remained unchanged
The balloon increased in size
The balloon decreased in size
23
Multiple Choice
According to the video what keeps the mass of the air molecules constant?
The size of the syringe
The temperature of the air
Covering the opening of the syringe
Water in the balloon
Gas Laws
School Announcements:
Boyle's Law
Charles’s Law
Avogadro’s Law
Ideal Gas Law
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