The Nature of Gases
A device that is used to measure atmospheric pressure. -k.f.
What is a barometer?
The conversion of a liquid to a gas or a vapor. -k.f
What is vaporization?
Two or more different molecular forms of the same element in the same physical state. -k.f.
What are Allotropes?
To separate mixtures and to purify compounds
How do organic chemists use sublimation ?
An empty space with no particles and no pressure. -k.f
What is a vaccum?
When billions of rapidly moving particles in a gas colliding with an object all at once. -k.f
What is Gas Pressure?
The temperature where the vapor pressure an the external pressure are equal.
What is boiling pressure?
A solid that doesn't have an internal structure. -k.f
What is a amorphous solid?
Provides the conditions of a substance pressure and temperature. -k.f
What is phase diagram?
At what temperature do the particles of all substances have the same average kinetic energy ?
at any given temperature
It is due to kinetic energy in the particles increasing.
Why does an increase of temperature of a contained liquid increase the vapor pressure ?
The atmospheric pressure is lower at high altitudes and boiling points decrease at high altitudes.
Why don't liquids boil at the same time ?
The smallest group of particles in a crystal that holds the geometric shape of the crystal. -k.f.
What is the unit cell?
When the vapor pressure exceeds atmospheric pressure at or near room temperature. -k.f
What is solid sublimation?
Gases are the particles in a gas are small, hard spheres with an insignificant volume. -k.f
What is one fundamental assumption of gases?
Only those molecules with a certain minimum kinetic energy can escape from the surface of the liquid. -k.f
What happens during evaporation?
The arrangement of the particles determines the shape and is classified into seven systems. -k.f.
What is a crystal?
Is about 10,000 Pa or 100 kilopascals (kPa).-k.f
What is normal atosmpheric pressure?