volume

advertisement
The Great One’s
Jeopardy
Learning Objectives
• Describe solids, liquids, & gases in terms of their
shape, volume, kinetic energy of their particles, &
distance between their particles.
• Explain what happens to the particles of a substance
during the changes between a solid & liquid, liquid &
gas, solid & gas, and vice-versa. Also, apply the
terms for these changes to real world examples.
• Explain how the pressure, temperature, and volume of
a gas in a sealed container are related & describe what
happens on a particle-level for changes in gases.
• Create logical hypothesis, design proper experiments
(while controlling certain variables), analyze Gas Law
and other data, make claims and back them up with
experimental evidence.
RULES
1. There will be round robin play and all
questions including the daily doubles.
2. The teams who answers correctly win the
point value of the question.
3. If a team answers a daily double
incorrectly, then that team will lose the
number of points they bid, and any other
team can “ring in” by raising their hand
and answer at that point.
4. There are two daily doubles available. Let’s
play
States of Changes
Matter of State
Gases
Data Analysis Leftovers
& Exp’ts
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
Final Jeopardy
200
States of Matter for 100
The state of matter with a definite shape
and volume is a _________.
Solid
States of Matter for 200
The state of matter that has no definite
shape nor definite volume is a _______,
while a ________ has a definite volume but
no definite shape.
Gas
Liquid
States of Matter for 300
Describe solids, liquids, in gases in terms of
the kinetic energy of their particles.
Solid- lowest KE, Liquids- Medium KE,
Gases- Most KE
States of Matter for 400
Describe solids, liquids, and gases in terms
of the distance between their particles.
From solids to gases, the particles move
further apart.
States of Matter for 500
Liquids: Give an example of a substance with a
high viscosity. Also, explain how a student can
place a sewing needle on top of a sample of
water.
Honey, Glass, etc.- resist flow well
Water’s skin-like surface tension allows more
dense objects to seemingly float on its surface.
Changes of State for 100
The phase change from a solid to a liquid is
called ________, while the opposite change
is called _________.
Melting
Freezing
Changes of State for 200
Soup is gently heating on the stove. What
phase change is occurring? What phase
change is occurring when the side of your
soda gets wet or looks foggy?
Vaporization (soup)
Condensation (wet soda can)
Changes of State for 300
If you are examining a temperature vs. time
graph for the heating of a solid until it
becomes a hot liquid, then what will happen
to the temperature during the melting
process. What will you see on the graph?
Constant temperature (it stays the same)straight horizontal line of the graph
Changes of State
DAILY DOUBLE!!!
What happens to most substances when heated but
not to the point where a phase change would
occur? Include what happens to the particles of the
substance in your answer.
The substance would expand because the particles
start to move more and spread further apart.
Changes of State for 500
Suppose you are cooling a gas down until it turns into
a liquid and then into a solid. Explain what will be
happening to the particles as this cooling process
takes place.
The particles will start to come together more and
more, and slow down until they are in close
contact vibrating back and forth.
Gases for 100
As gas particles move faster and faster in a
sealed, rigid container the _________ inside
the container will increase.
Pressure
Gases for 200
As you go higher in altitude, there are fewer
air particles. So, what happens to
temperature and pressure as you go higher
in altitude? Explain your answer.
Pressure decreases b/c there are fewer
particles, so temperature is lower as well.
Gases for 300
What will happen to your bike tire if it’s left
out in the heat? Explain your answer (in
terms of what the gas particles will do).
It will inflate because as temp. increases,
volume does too. This is due to the
particles spreading further apart.
Gases
DAILY DOUBLE!!!
What happens to most substances when they
freeze (include what the particles are doing in
your answer)? Why is water unique when it
freezes? Hint- Think about what happens to a
soda can when the water inside it freezes.
Most substances contract due to the particles
coming closer together. Water is unique in that
it expands when it freezes because the particles
arrange themselves slightly further apart in the
shape of a hexagon.
Gases for 500
As deep sea divers dive downward, gases
dissolve in their bloodstream. When they
come back up to the surface, they have to do it
slowly or risk the severe pains caused by the
“bends”. Explain why divers have to do this.
As they ascend, the pressure on the gases in their
bodies decreases, so the volume of the gases
increase b/c the gases have more room to expand
due to reduced pressure. If they ascend slowly,
their body has time to get rid of the gases safely.
Data Analysis & Exp’ts for 100
A substance melts at 0oC and boils at 100oC.
What would be a temperature where this
substance would be a solid?
-10oC (any temp. below 0oC)
Data Analysis & Exp’ts for 200
Temp. (oC)
Based upon the temperature
data, what would be a
reasonable estimate for the
volume of a sealed gas at
constant pressure at 100oC?
115-123 mL
0
Volume
(mL)
20
25
45
50
68
75
95
100
?
Data Analysis & Exp’ts for 300
Construct a proper
Temperature vs. Volume
graph based upon the 1st
four temperatures. What is
the relationship between
temperature and volume?
Line should go up and to the
right b/c as temp. goes up,
so does volume
Temp. (oC)
0
Volume
(mL)
20
25
45
50
68
75
95
100
?
Data Analysis & Exp’ts for 400
Suppose you are letting
water evaporate slowly over
time on a warm day. Based
upon the data, how much
liquid water would be left
after 200 minutes?
400 mL
Time (min.)
0
Volume of
Water (mL)
800
25
750
50
700
75
650
100
600
Data Analysis & Exp’ts for 500
Suppose you are designing an experiment to test the
effect of salt on water’s boiling point. Write a logical
hypothesis for this experiment. What are the Ind. and
Dep. variables. Provide your control and 2 conditions
you will be keeping constant in your answer.
Hypothesis: More salt = greater boiling point or lower
boiling point (hypothesis doesn’t have to be true)
Ind. Var. = Amount of salt; Dep. Var. = Water’s boiling
point
Control = Boiling pt. of plain water
Constants: Amount of water, same size container, same
temp. probe or thermometer, same air temp.
Leftovers for 100
Kinetic energy is the energy of __________.
Movement or motion
Leftovers for 200
The change directly from a solid to a gas is
called ___________. After washing the
dishes and rinsing them with hot water, you
decide not to dry them, so they’re still wet.
However, after 20 minutes, most of the
dishes are completely dry. What phase
change occurred?
Sublimation
Evaporation
Gas Laws
What is kept constant for all of the
Gas Laws we discussed?
Number of gas particles
Download
Related flashcards
Create Flashcards