States of Matter
Phase Changes
Phys. Vs. Chem
Thermal Energy
Pretend the Bottom line reads "Thermal Energy Added"
100
Which state of matter has NO definite shape, but definite volume?
Liquids!
100
What word means:Changing from a gas to a liquid
Condensation
100
What do you call a phase change that does not produce a new substance?
Physical change
100
Define: Thermal Energy
Another word for "Heat"
OR
The movement of particles, resulting in heat
100
Which line shows "Gas"
EF
200
Which state of matter has the least amount of particle motion?
Solids
200
What word means "Changing from a liquid to a gas"?
Evaporation
200
If I combine two liquids and it gives off a bright light, what type of change would it be considered?
Chemical
200
True or False: Adding thermal energy to water will increase its temperature
True
200
The line "AB" represents what?
Solids
300
What state of matter is shown here?
Liquid
300
What word means:
Changing from a solid to a gas? Give me an example!
Sublimation - Dry Ice or Moth Balls
300
Toasting bread is an example of what type of change? How do you know?
Chemical - you cannot untoast bread
300
If I am adding thermal energy to a substance that is going through a phase change, what is happening to the temperature?
It is staying the same!!!!
300
C moving to B represents what?
Freezing
400
What state of matter makes up 99% of the overall universe?
Plasmas!
400
What word means "Going from a gas to a liquid"?
Condensation
400
Is frost growing on grass an example of a physical or chemical change?
Physical
400
Removing thermal energy from a substance is going to do what from the particles? (talk about speed and closeness)
They will slow down and get closer together
400
The line for DE could represent two things. What are those two things?
Evaporation and Condensation
500
Describe the particles in all four states of matter!
Solid: Compact and vibrate
Liquid: Move more freely and a bit further apart
Gas: Move freely around quickly
Plasma: Rapid movement/particles split
500
What word means going from gas to a solid?
What is an example of this?
Deposition - Frost
500
Describe how you could distinguish between a chemical change vs a physical change
Chemical change creates a new substance and cannot be reversed, a physical change does not create a new substance
500
If you add thermal energy to ice that is melting, what is happening to the temperature?
It stays the same!
500
2 lines on this chart represent phase changes. HOW DO WE KNOW which lines they are?
The temperature stops increasing when heat is added.