Particle Movement
Tightly packed molecules; slide past each other
What is liquid?
This is the ability to do work or cause change
What is energy?
Matter can change from one state to another when this is released or absorbed
What is thermal energy?
Daily Double
See the photo on slide 55
What is added?
This stage has a definite volume but no definite shape
What is liquid?
Tightly packed molecules that do not move past each other
What is solid?
This is the energy of motion.
What is kinetic energy?
The change from the solid state to the liquid state
What is melting?
Changing from a liquid state to a solid state
What is freezing?
This stage has both a difinite shape and a definite volume
What is solid?
Molecules are not tightly packed together and have so much energy they slip past each other.
What is gas?
Particles with little of this move slow and close together
What is kinetic energy?
The temperature at which a substance changes from a solid to a liquid
What is melting point?
When particles move slowly enough for their attractions to bring them together, droplets of liquid form
What is condensation?
This stage has no difinite shape and no definite volume
What is gas?
This makes molecules speed up
What is adding or absorbing heat
Order the states of matter from least to the most kinetic energy
What is solid, liquid, gas?
Is energy being added or taken away in this phase change? (Slide 57)
What is taken away?
The change in state from a liquid to a gas
What is vaporization?
Both states have a definite volume
What is solid and liquid?
This causes molecules to slow down
What is removing or releasing heat?
The total kinetic energy of all the particles in a sample of matter
What is thermal energy?
This process is the opposite of vaporization
What is condensation?
Some susbtances can change from the solid state to the gas state without ever becoming liquid
What is sublimation?
What properties do liquids and gases have in common?
What is both take on the shape of the container they are in?