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Physics > Ideal Gases And Molecules > Flashcards

Ideal Gases And Molecules Flashcards

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0
Q

Volume

A

Quantity of 3D space occupied by an object

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1
Q

Pressure

A

Force per unit area

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2
Q

Temperature

A

Measurement of the average EK of molecules

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3
Q

What equations links pressure force and area

A

P= F/A

Pressure increases as force increases and area decreases

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4
Q

Molecules in low temperature

A

Constant mass

Fixed volume

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5
Q

Molecules in high temperature

A

Increases EK
More collisions with wall of container
Higher force in each collisions

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6
Q

Molecules when volume is lowered

A

More collisions against wall of container
Force exerted on sides of the container
Pressure increased

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7
Q

Start of Kelvin scale

A

-273 degrees

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8
Q

Boyle’s Law

A

For a fixed mass of gas at a constant temperature, pressure is inversely proportional to volume

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9
Q

How to get kelvin from degrees

A

Add 273

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10
Q

Gas law

A

P1V1/T1 = P2V2/T2

P1/T1 = P2/T2

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11
Q

Movement of pollen grains in Brownian Motion

A

Random and rapid

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12
Q

Why do pollen grains move on water

A

The collide with water molecules

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13
Q

How are water molecules moving

A

Randomly and rapidly

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14
Q

How would pollen grains move in hotter water

A

More rapidly

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15
Q

Boyle’s law equation

A

P1V1 = P2V2

16
Q

What are the assumptions of Boyle’s law

A

Fixed mass and temperature when pressure and volume are being dealt with

17
Q

How does gas exert pressure on a container

A

The collide with walls
Exert force on walls
This creates pressure

18
Q

What’s the pressure law equation

A

P1/T1 = P2/T2

19
Q

What are the assumptions made for pressure law

A

Fixed mass and constant volume

20
Q

Why is -273K called absolute zero

A

Gases at this temperature do not have any kinetic energy and so aren’t moving and cannot collide so no pressure can build up

Physics (22 decks)

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