States of Matter
Properties of Gas
Graphs
Changes in State
Heating Curve
100
Describe the motion of particles in a solid.
tightly packed together & in fixed positions
100
What are the three characteristics of gas that we measure?
volume, temperature, pressure
100
The x-axis shows the ________ .
independent variable
100
When a solid changes into a liquid, this process is called _________.
melting
100
In the
heating curve
for iron,
describe the
phase change
that occurred
between
points B and
C on the
graph.
Melting
200
Liquids have ______ shape and _________ volume.
– no definite shape and definite volume
200
If temperature is held constant and pressure increases, what else happens?
- volume decreases
200
The y-axis shows the ________.
dependent variable
200
When a liquid turns into a gas, that process is called _____
boiling or evaporation
200
What is the melting point of Iron?
1500 Degrees Celsius
300
Gas have _________ shape and __________ volume.
– no definite and no definite
300
If volume is held constant and temperature increases, what else happens?
.-pressure increases.
300
Explain what it means if a graph shows that two factors are directly proportional. Give an example.
as one variable increases, the other variable also increases.
300
When a solid melts into a liquid, or a liquid goes into a gas, it needs to have gained enough __________
- thermal energy.
300
What is the freezing point of the substance?
5 degrees Celsius
400
Describe the difference between a crystalline solid and an amorphous solid
crystalline have particles in a regular repeating pattern and a definite melting point, whereas amorphous solids have no regular pattern and distinct melting point
400
What does Boyle’s law say? When graphing, what type of relationship does it have?
if T is constant, as pressure increases, volume decreases. They are inversely proportional
400
Explain what it means if a graph shows that two factors vary inversely. Give an example.
as one variable increases, the other variable decreases.
400
Explain what condensation is.
– when a gas loses energy to become a liquid
400
What number represents the vaporization of the liquid?
4
500
List the states of matter from lowest energy to highest energy
solid, liquid, gas, plasma
500
What does Charles’ law say? When graphing, what type of relationship does it show?
a. If P increases at constant T, then volume decreases. Inversely proportional
b. If T increases at constant P, then volume increases. Directly proportional
b. If T increases at constant P, then volume increases. Directly proportional
500
If we increase the temperature in a container of gas, what happens to the pressure? Why?
the pressure will increase because the atoms will be moving faster as they gain more energy
500
Explain what sublimation is
– when a solid turns directly into a gas without becoming a liquid first.
500
Which numbers show a change in kinetic energy?
Potential energy?
1,2,5
2,4