1. Solids, Liquids and Gases
Microscopic to Macroscopic
Solids, Liquids and Gases

2. Macroscopic vs. Microscopic
Macroscopic means from the big picture or from far away.
This means what we can see with the naked eye.
Microscopic means from close up or on a small scale.
This means what it looks like on the atomic or molecular level

3. One Explains the Other
Keep your eye out for how the microscopic picture makes the macroscopic picture make sense.
What do solids look like on the microscopic level?
Why do solids have the properties they do?
The first explains the second!

4. Solids Macroscopically
What are some properties of solids?
What makes solids unique?
Constant volume (don’t take the volumes
of their container.)
Constant shape (don’t take the shapes
High Constant density
(don’t change density based on conditions.)
What are some examples of solids?

5. Liquids Macroscopically
What are some properties of liquids?
What makes liquids unique?
Constant volume (don’t take the volume
of their container.)
NOT Constant shape (do take the shape
Medium ALMOST Constant density
(change density very little based on conditions.)
What are some examples of liquids?

6. Gases Macroscopically
What are some properties of gases?
What makes gases unique?
NOT Constant volume (do take the volume
of their container.)
NOT Constant shape (do take the shape
Very Low NOT Constant density
(do change density based on conditions.)
What are some examples of gases?

7. Volume Shape Density Macroscopic Summary Solids Liquids Gases CONSTANT
(does not match container)
Does not change with conditions
(very high density)
Liquids
NOT CONSTANT (does match container)
Changes very little with conditions
(medium density)
Gases
Changes to match conditions
(very low density

8. Solids Microscopically
Atoms/molecules BONDED (attached) together!
Atoms are in fixed positions and cannot move individually.
How does this affect their ability to change shape or volume?
Do the demo!

9. Liquids Microscopically
Atoms/molecules NOT BONDED (attached) together!
Atoms/molecules are not in fixed positions and can move individually.
Still attracted to each other because they are close and moving slowly.
How does this affect their ability to change shape or volume?
Do the demo!

10. Gases Microscopically
Atoms/molecules NOT BONDED (attached) together!
Atoms/moelcules are not in fixed positions and can move individually.
Atoms/molecules are very far apart, moving very quickly!
How does this affect their ability to change shape or volume?
Do the demo!

11. Microscopic Comparision
Watch the movie.
What are the microscopic comparisons of the three states?
Gases bonded, not moving.
Liquids free to move, but slow and close together
Gases free to move; they are fast and far apart.
How does this explain their macroscopic properties?