Kinetic Molecular Theory
1. All mater is made of atoms.
2. Atoms are in constant motion.
3. Atoms collide with each other and the walls of their container.
What is the kinetic molecular theory?
How many states of matter exist.
What is 4?
This refers to an object getting larger when heat is added.
What is thermal expansion?
This is when a substance changes from one state to another.
What is a phase change.
When particles collide, they create this.
What is pressure?
This is the AVERAGE amount of kinetic energy in a substance. (How fast the particles are moving)
What is temperature?
This state of matter has a definite shape AND definite volume.
What is solid?
As a substance gains thermal energy, the particles do this.
(Movement and spacing)
What is move faster and spread farther apart?
This is what happens to temperature when a substance is going through a phase change.
What is stays the same?
If the number of gas molecules increases, but the volume stays the same, pressure will do this.
What is increase?
This is the total amount of energy (PE and KE) in a substance.
What is heat/thermal Energy?
This state of matter does not have a definite shape, but does have a definite volume.
What is liquid?
As a substance looses thermal energy, the particles do this.
(Movement and spacing)
What is moves slower and gets closer together?
During a phase change, this DOES change.
(Other than the state of matter)
What is thermal energy?
On a cold day, the tires in a car deflate. This is the cause and this is the effect.
What is:
Cause: Temperature dropped.
Effect: Pressure decreased/tires deflate.
This state of matter has the LEAST amount of kinetic energy.
What is a solid?
This state of matter does not have a definite shape or volume.
What is gas?
This is the temperature scale where water freezes at 0 and boils at 100. What we use in science.
What is Celsius?
These are the 2 phase changes where a substance is GAINING energy.
What are melting and vaporizing?
A sample of gas is held inside a sealed, FLEXIBLE container. If the external pressure on the container remains constant but the gas's temperature is significantly increased. This will likely happen to the gas's volume.
What is increase?
This state of matter has the MOST amount of kinetic energy.
What is plasma?
Maybe-gas
This state of matter is highly compressible.
What is gas?
This is the temperature at which water boils.
What is 100*c?
These are the 2 phase changes where a substance is LOOSING energy.
What are freezing and condensing?
This behavior of gasses explains why Ms. Saunders could smell the baking cookies from downstairs.
What is diffusion?