Download Chapter 3 - Ms. Sill`s Class

Chapter 3
Section 1 – pg 90
States of Matter
Is this water or ice?
Both!
Ice = frozen water!
Pg 91
States of Matter
Solid
Liquid
Gas
Pg 91
Has a definite shape
and a definite volume
Pg 92
Solids
The particles in a solid are closely locked in
position and can only vibrate
Crystalline Solids
Pg 92
Solids made of crystals
Crystals – particles form a regular repeating pattern
Melts at specific temperature
Examples: sugar, salt, snow, quartz
Amorphous Solids
Pg 92
Solids where the particles are not arranged
in a regular pattern
examples: wax, glass, butter, rubber,
plastic
Do not melt at specific temperature
Pg 93
Has a definite volume but no definite
shape
-will take the shape of the
container it is in
Pg 93
Liquids
Compared to particles in a solid, the particles
in a liquid are more loosely connected and
can collide with and move past one another
Pg 94
The result of an inward pull among the
molecules of a liquid that brings the
molecules on the surface closer together
Pg 94
A liquid’s resistance to flowing
Depends on the size and shape of
particles and attraction between particles
Pg 95
Have no definite shape and no definite volume
Is a fluid – like liquids
Fluids – a substance that flows
Pg 95
In gases, the atoms and molecules are free
to move independently, colliding frequently.
Gases expand to fill the
container they are in
Ch 3 Section 1
Homework
pg 95
1A. What is a solid?
1B. How can the
motion of particles in a
solid be described?
1C. How do crystalline
solids differ from
amorphous solids?
2A. How may liquids be
described in term of
shape and volume?
2B. How do the positions
and movements of
particles in a liquid help to
explain the shape and
volume of the liquid?
2C. Explain why a
sewing needle can float
on the surface of water
in a glass.
3A. How can the motion
of particles in a gas be
described?
3B. What determines the
shape and volume of a
gas inside a container?
3C. Use what you know
about the particles in a
gas to explain why a gas
has no definite shape.