Kinetic Molecular Theory (Conceptual Understanding)
According to the kinetic molecular theory, all matter is composed of:
Tiny particles in constant random motion
What causes Pressure of the gas?
The collisions of gas particles with the container walls
What is 1atm in mmHg?
760 mmHg
When temperature decreases, what happens to the gas volume:
Decreases
A manometer measures
Pressure
In a solid, how do particles move?
Vibrate in fixed positions
How are Pressure and Temperature related?
Directly related/proportional
Convert 354.2 kPa to atm. (1 atm = 101.3 kPa)
3.50atm
If a gas at 100°C is cooled to 50°C, its volume ..
Decreases by a factor proportional to absolute temperature
If mercury level on the open side is higher, gas pressure is:
Less than atmospheric pressure
The shape and volume of a gas depend on:
The size of its container
How are Volume and Pressure related?
Indirectly proportional
Convert 354.2 kPa to mmHg.
2657 mmHg
When a gas sample is heated at constant pressure, what happens to its particles?
Move faster and spread apart
If mercury level on the gas side is higher, gas pressure is:
Greater than atmospheric pressure
What happens to the particles of a substance when heated in terms of movement and distance between particles?
Move faster and farther apart
What happens to the pressure of a gas when heated in a closed container?
Increases
Convert 84.0 kPa to torr
630 torr
Suppose 25.0 mL of a gas at 725 mmHg and 20°C is converted to STP. What will happen to its volume?
Decrease
Atmospheric pressure at sea level is approximately:
All of the above
On what two factors was a Celsius scale devised based on?
The freezing and boiling points of water
What does the unit kPa stand for
kilopascal
The atmospheric pressure in Denver is 84.0 kPa. What is this in atm?
1.20 atm
When pressure is constant and temperature increases, particle collisions with the container walls will ...
Increase
The SI unit for pressure is:
Pascal (Pa)