Guided Reading Chapter 10 Section 3
1. What are the “phases of matter?” Gas, Liquid, Solid
2. Intermolecular Forces are the forces that form between molecules that are strong enough to attach
neighboring molecules to each other.
3. Which is stronger the intermolecular forces between iron or water? How do you know?
We know that Iron has stronger intermolecular forces because
Iron has a higher melting point than water
4. A “competition” always exists between Temperature and intermolecular forces. The
Kinetic Energy of temperature pushes molecules apart and inter molecular forces try to pull
5. Different substances have different melting points because the intermolecular forces Vary between
molecules.
6. On the graph on page 242 what does not change during the flat line? Temperature
7. On the graph on page 242 what is changing during the flat line? Phase
8. When a solid changes directly to a gas it is called Sublimation
a) condensation b) evaporation c) sublimation d) freezing
9. At what temperature does matter break apart and change into plasma? 10,000 degrees Celsius
10. Man-made plasma is created when an electrical current is passed through a Gas like
Lightning, Neon Lights, TV Screens
Vocabulary Chapter 10 Section 3
1. A state of matter that Solid holds its shape.
2. A state of matter that Liquid does not hold its shape but does hold its volume.
3. A state of matter that Gas does not hold its shape and takes on the volume of its
4. The forces that determine the phase of matter are known as Intermolecular Forces
5. The temperature at which a substance changes from solid to liquid is called Melting Point
6. The temperature at which a substance changes from liquid to gas is called Boiling Point
7. Plasma is a phase of matter in which some of the atoms begin to break apart.
8. Kinetic Molecular Theory is the concept that all atoms and molecules exhibit random motion.
Complete the following chart to demonstrate your knowledge of the phases of matter…
Phase
Solid
Liquid
Energy
(movement of
particles)
Characteristics that
you see
Molecules
vibrate in
place
Molecules
move around
Holds Shape and
doesn’t flow
Gas
Flows, takes shape
of container,
constant volume
Expand/contract to
fill container. No
constant volume
Temperat
ure
(medium
and low)
Low
Intermolecular
Force (strong
and weakest)
Molecular
Diagram
Pg. 240
Strongest
Middle
Medium/Strong See page 240
See page 240
Molecules
High
Weak
See page 240
break away
from each
other
Plasma
Atoms break
Follows electric
highest
Weakest
See page 240
apart
current
1. Identify the phase or phases of matter (solids, liquids, and gases) that apply to each statement. More
than one phase of matter may apply to each statement. (Plasma is used once)
a. Molecules do not move around, but vibrate in place Solid
b. Has volume but no particular shape Liquid
c. Flows Liquid and Gas
d. Molecules break free of intermolecular forces Plasma
e. Does not have a volume or shape Gas
f. Molecules can move around and switch places, but remain close together Liquid
2. Matter has four phases that we experience. List the four phases in order of increasing temperature
(lowest to highest)
Solid, Liquid, Gas, Plasma
3. Put the following terms in order from greatest intermolecular forces, to weakest intermolecular
forces:
Solid, Liquid, Gas, Plasma
4. Identify the segment of the graph (A, B, C, D, E) in Figure 10.17 where a phase change is occurring.
There could be more than one place. Explain your reasoning.
Phase changes between B/C and D/E.