Kinetic Theory
Liquids
Solids
Gas
Changes of State
100
It is energy that a body possesses by being in motion.
What is Kinetic Energy?
100
Yes,the particles are attracted to each other and are close together.
Does liquid have a definite volume?
100
The shape of a crystal is determined by the arrangements of the particles within the solid.
What determines the shape of a crystal?
100
Billions of rapidly moving particles in a gas simultaneously colliding with an object is a result of gas pressure.
What is gas pressure a result of?
100
It is the change of a substance from a solid to a vapor without passing through the liquids state.
What is Sublimation?
200
273 K.
What is waters freezing point?
200
It is the conversion of a liquid to a gas or vapor.
What is Evaporation?
200
They are two or more different molecular forms of the same element in the same physical state.
What are allotropes?
200
It is the SI unit of pressure. It represents a very small amount of pressure.
What is pascal(Pa)?
200
Since solids like liquids have a vapor pressure. It occurs in solids with vapor pressures that exceed atmospheric pressure at or near room temperature.
Why does Sublimation occur?
300
It is a device that measures atmospheric pressure.
What is a barometer?
300
373 K is the boiling point for water.
What is the boiling point?
300
The general properties of solids reflect the orderly arrangement of their particles and the fixed locations of their particles.
How are the structure and properties of solids related?
300
It supports 760 mm of mercury in a mercury barometer at 25 Celsius.
What does standard atmosphere (atm) support?
300
It describes the only set of conditions in which all three phases can exist in equilibrium with one another.
What does triple point describe?
400
Increase.
If the temperature of the gas is increased, the kinetic energy would?
400
The interplay between the disruptive motions of particles in a liquid and the attractions among the particles.
What factors determine the physical properties of liquids?
400
Of atoms of the same element they have different properties since their structures are different.
What are allotropes composed of ?
400
Atmosphere pressure.
What is the result of the collision of atoms in molecules in air with objects?
400
A decrease in pressure lowers the boiling point and raises the melting point. A increase in pressure will raise the boiling point and lower the melting point.
How does a decrease and increase of pressure affect the boiling and melting point?
500
Particles in gas are small,hard spheres with an insignificant volume. The motion of the particles in a gas is rapid ,constant,and random. All collisions between particles in a gas are perfectly elastic.
What are the three assumptions of the Kinetic Theory?
500
During evaporation only molecules with a certain minimum kinetic energy can escape from the surface of the liquid.
What is the relationship between evaporation and kinetic energy?
500
Sublimation.
What is it called when a solid changes into a gas?
500
They are all perfectly elastic.
What are all collisions between particles in a gas ?
500
By a line separating the two regions representing the phases.
How are the conditions at which phases are in equilibrium represented on a phase diagram?
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