Gas
What is the shape of gas
Whatever the shape of its container is.
True or False: Liquids have no definite volume
False
True or False: Particles in solids move.
False
An empty space with no pressure
A Vacuum
Fill the following blanks in the sentence: The melting point is the temperature at which a _____ changes into a ______.
Blank 1:Solid Blank 2:Liquid
How do gas particles move?
Fast, constantly, and randomly.
Liquids are denser than this type of matter...
Gas
True or False: All solids melt
False: Some solids decompose, such as wood and cane sugar.
What do you use to measure atmospheric pressure?
Fill the following blanks in the sentence: The freezing point is the temperature at which a _____ changes into a ____.
Blank 1:Liquid Blank 2:Solid
What are the characteristics of a gas particle?
They are small, hard spheres, with insignificant volume.
What speeds up the process of vaporization?
How many crystal systems are there?
7
What causes atmospheric pressure on earth?
Gravity
What is it called when a solid turns into a gas without being a liquid first?
Sublimation.
True or False: Gas is Elastic
True
Which liquid particles can undergo evaporation?
Those with a specific amount of kinetic energy.
Why do ionic solids tend to have higher melting points?
Because they have stronger forces holding them together.
What is the difference between gas pressure and vapor pressure?
The pressure of a gas is the pressure exerted by a gas in the volume occupied by a mixture of gases, while the vapor pressure of a gas is the pressure exerted by a gas over a liquid.
Why does a liquids temperature remain constant when boiling?
Boiling makes all the hotter particles turn into gas and leave the liquid when they do this they take the thermal energy with them, making the temperature of the liquid stay the same.
What is between particles of gas?
Empty space. There is no attractive or repulsive forces between them.
Why is evaporation labeled a cooling process?
Evaporation removes the particles with the most kinetic energy(The hottest ones) leaving only the particles with low kinetic energy(The cooler ones), making the liquid cooler.
What is the name for the smallest group of particles in a crystal that retains its geometric shape?
How does Kinetic Theory explain gas pressure
The motion of the particles in a gas is rapid constant and random
What would the extraction of water vapor from a frozen solid, creating dry ice be an example of?
Sublimation