Gases
Yes
Can you easily compress liquids?
No
Will solids (in general) sink or float in their own liquid state of matter?
Sink
What does the kinetic-molecular theory say about the size of particles?
They are small
What is it called when a solid turns into a liquid.
Melting
What is it called when I press gas molecules together?
Compression
Viscosity is the measure of the resistance of a liquid to what?
flow
Do amorphous solids have a regular, repeating pattern?
No
Does the kinetic molecular theory apply to all phases?
Yes
What is the name of the process where a gas turns into a liquid
condensation
Name the gas behavior:
I pop a hole in a balloon and the gas escapes
Effusion
What happens to viscosity as temperature increases?
Decreases
What will happen if I drop an ionic solid on the floor?
It will shatter because ionic solids are brittle
Increases
What is it called when only the surface of a liquid turns into a gas?
evaporation
As Molecular mass increases, what happens to the rate of diffusion/effusion?
True or false:
Cohesion is when molecules that are different than each other stick together.
False
What is the main example that I gave you for Covalent Network Solids?
Carbon solids: diamond, graphite, buckyball
Daily Double
What causes solids to behave is a way that is seemingly against the kinetic molecular theory?
Bonds between molecules
In phase changes that release energy, what happens to the speed of the molecules
slows down, decreases
Explain why there is higher air pressure at lower altitudes.
Gravity pulls more air molecules towards the surface. More gas= higher pressure because of Daltons Law of partial pressure.
Water is placed into a cup. Which direction is the pull on the surface area of the water?
Inward
This Molecular solid defies typical solid rules.
H2O
H2 , N2 , O2 , Cl2
H2
What is the name for a phase change that takes energy into the object?
endothermic phase change