2. Solids
Solid: is the state of matter that has a
definite shape and volume.
The particles have a strong attraction for
each other; this is why the particles are
close together.
3. Molecules in a Solid
The molecules in a solid move, but since
they are so close together they just
vibrate against each other.
4. Examples of a Solid
Chair
Pizza
People
Rocks
Pillows
5. Two Types of Solids
Crystalline Amorphous
• Particles in a orderly,
repeating pattern of rows
• Particles have no special
arrangement.
• Particles don’t move
around, but vibrate.
• Particles don’t move
around, but vibrate.
• Ex: iron, diamond, ice • Ex: glass, rubber, wax
6. Liquids
Liquid: is the state of matter that has a
definite volume but takes on the shape of
its container.
7. Examples of a Liquid
Water
Milk
Juice
Soda
Lava
8. Molecules in a Liquid
The molecules in a liquid move fast
enough to over come some the
attraction between other molecules.
The molecules can move freely within
their definite volume.
9. Properties of a Liquid
Viscosity: a liquid’s resistance to flow.
10. Examples of Viscosity
Water has a low viscosity because we
have rivers.
Syrup has a higher viscosity because
when you squeeze it out of the bottle, it
takes a little while to come out.
11. Properties of a Liquid (cont.)
Surface Tension: a force that holds
together particles at the surface of a
liquid.
12. Examples of Surface Tension
If you drip water on to wax paper using a
eye dropper, you can see the drops rise
off the paper quite clearly.
If you do the same technique above but
use rubbing alcohol, the bubbles are very
low to the table.
High Surface Tension Low Surface Tension
13. Gases
Gas: is the state of matter that has no
definite shape or volume.
14. Molecules in a Gas
The molecules in a gas can move quickly
and freely.
The amount of empty space between the
molecules can change
15. Examples of a Gas
Oxygen
Helium
Carbon Dioxide
Nitrogen
Argon
