Slide 2 Gas Laws Mrs. T. Miller Enter presentation Slide 3
Boyles Law References Algebra Review Author Biography Charles Law
Gay-Lussacs Law Combined Gas Law Slide 4 References Microsoft
Office Clip Art
http://www.chemistry.mtu.edu/~pcharles/SCIHISTORY/Boyle.html
http://www.bbc.co.uk/history/historic_figures/boyle_robert.shtml
http://www.youtube.com/watch?v=SRCYjrLlN9o
http://www.chemteam.info/GasLaw/Gas-Charles.html
http://www.centennialofflight.gov/essay/Dictionary/Charles/DI16.htm
http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/balloon.html#c1
http://en.wikipedia.org/wiki/Joseph_Louis_Gay-Lussac
http://chemconnections.org/Java/molecules/
http://phet.colorado.edu/en/simulation/gas-properties
http://office.microsoft.com
http://www.youtube.com/watch?v=YKivPSVGpsw
http://www.youtube.com/watch?v=lfNJJEdKgLU
http://www.youtube.com/watch?v=mpC5zlmtm-g http://vimeo.com/2050118
http://www.youtube.com/watch?v=Yk71GY02diY Slide 5 About the Author
Mrs. Miller Chemistry Teacher NHS Advisor Science Club Advisor
Science Department Chairperson Visit my Teacher Webpage My son
Slide 6 Algebra Review Solve for x: 5x = 23 *Divide both sides by 5
5x = 23 5 5 x = 4.6 Solve for x: 2 = 13 x 7 *Simplify right side; x
must come out of the denominator *Multiply both sides by x x * 2 =
1.86 * x x 2 = 1.86x *Divide both sides by 1.86 x = 1.1 OR use
CROSS MULTIPLY AND DIVIDE technique Slide 7 Boyles Law - History
Robert Boyle (1627-1691) Designed the vacuum chamber / air pump
with Robert Hooke One of first prominent scientists to perform
controlled experiments and publish detailed procedures and the
results of his work. Watch through 1:43 Slide 8 Boyles Law Data
Analysis Volume (mL)Pressure (atm) 2.33.7 4.13.1 6.52.4 7.22.1
8.81.6 Slide 9 Boyles Law - Summary By the data, the relationship
between Volume and Pressure is: Inversely proportional Slide 10
Boyles Law - Equation P 1 V 1 = P 2 V 2 Initial Pressure Initial
Volume New Pressure Click slide to determine what each variable
stands for Slide 11 Boyles Law Practice Problem #1: A gas begins
with a volume of 25.0 mL and a pressure of 3.2 atm. What is the new
pressure when the volume becomes 34.2 mL? 2.3 atm0.4 atm Solve and
click the answer you think is correct Go back to Equation Slide 12
That is correct! Go to Question 2 Slide 13 That is incorrect Go
back to Question 1 Slide 14 Boyles Law Practice Problem #2: What
was the original volume of a gas if the pressure changes from 8.9
atm to 4.5 atm when the gas expands to 34.5 mL? 68.2 mL17.4 mL
Solve and click the answer you think is correct Go back to Equation
Slide 15 That is correct! Charles Law Slide 16 That is incorrect Go
back to Question 2 Slide 17 Charles Law - History Jacques Charles
(1746-1823) Inventor of the hydrogen- filled balloon Slide 18
Charles Law Data Analysis Temp ( 0 C)Temp (K)Volume (mL) 02732.6
242972.8 513243.2 753483.5 943673.7 Slide 19 Charles Law - Summary
By the data, the relationship between Volume and Temperature is:
Directly proportional Slide 20 Charles Law - Equation Initial
Volume Initial Temperature (must be in Kelvin!) New Volume New
Temperature (must be in Kelvin!) Click slide to determine what each
variable stands for Slide 21 Charles Law Practice Problem #1: A gas
begins with a volume of 25.0 mL at a temperature of 25 o C. What is
the new volume when the temperature becomes 55 o C? 55.0 mL27.5 mL
Solve and click the answer you think is correct Go back to Equation
Slide 22 That is correct! Go to Question 2 Slide 23 That is
incorrect Go back to Question 1 Slide 24 Charles Law Practice
Problem #2: If a gas begins at a volume of 32.5 mL at a temperature
of 75 o C, what temperature is needed to change the volume to 15.1
mL? -273 o C-111 o C Solve and click the answer you think is
correct Go back to Equation Slide 25 That is correct! Gay-Lussacs
Law Slide 26 That is incorrect Go back to Question 2 Slide 27
Gay-Lussacs Law - History Joseph Louis Gay-Lussac (1778-1850) In
addition to his work with gases, Gay-Lussac is credited for
identifying iodine as an element Click on the button to the left to
go to a gas simulation activity. Vary the temperature and see how
pressure changes. Vary the pressure and see how temperature
changes! Slide 28 Gay-Lussacs Law Data Analysis Temperature
(K)Pressure (atm) 2000.75 225 1.4 300 2.1 380 3.5 450 4.6 Slide 29
Gay-Lussacs Law - Summary By the data, the relationship between
Pressure and Temperature is: Directly proportional Slide 30
Gay-Lussacs Law - Equation Initial Pressure Initial Temperature
(must be in Kelvin!) New Pressure New Temperature (must be in
Kelvin!) Click slide to determine what each variable stands for
Slide 31 Gay-Lussacs Law Practice Problem #1: If the temperature of
a gas is 25 o C and the pressure is 1.1 atm, what is the new
pressure at 50 o C? 2.2 atm1.2 atm Solve and click the answer you
think is correct Go back to Equation Slide 32 That is correct! Go
to Question 2 Slide 33 That is incorrect Go back to Question 1
Slide 34 Gay-Lussacs Law Practice Problem #2: If a gas has a
pressure of 760 mmHg at 15 o C, to what temperature should the gas
be changed if you want a pressure of 700 mmHg? 14 o C-8 o C Solve
and click the answer you think is correct Go back to Equation Slide
35 That is correct! Combined Gas Law Slide 36 That is incorrect Go
back to Question 2 Slide 37 Combined Gas Law A combination of
Boyles, Charles and Gay- Lussacs Laws Includes all three variables
Temperature, Volume and Pressure Go to
http://phet.colorado.edu/en/simulation/gas-properties. Choose run.
When the program opens, pump some gas into the container, adjust
the volume by clicking and dragging the handle on the left. Then
adjust the temperature using the heat control at the bottom.
Observe how the pressure changes with each of these
adjustments.http://phet.colorado.edu/en/simulation/gas-properties
Slide 38 Combined Gas Law A combination of Boyles, Charles and Gay-
Lussacs Laws Temperatures must still be in Kelvin units! Slide 39
Combined Gas Law This is the only equation you really need to
memorize! Click to watch If temperature is constant If Pressure is
constant If Volume is constant Slide 40 Combined Gas Law Practice
Problem #1: A gas has a temperature of 295K, a volume of 25 mL and
pressure of 760 mmHg. What is the new volume when the temperature
changes to 340K and 800 mmHg? 0.04 mL27.4 mL Go back to Equation
Slide 41 That is correct! Go to Question 2 Slide 42 That is
incorrect Go back to Question 1 Slide 43 Combined Gas Law Practice
Problem #2: A gas has a temperature of 25 o C, a volume of 500 mL
mL and pressure of 3.2 atm. What is the new temperature if the
volume changes to 200 mL and the pressure changes to 2.3 atm? -187
o C86 o C Go back to Equation Slide 44 That is correct! Slide 45
That is incorrect Go back to Question 2 Slide 46 SUMMARY Watch the
following video clips. Be sure to understand WHY the results
occurred Congratulations! You have completed the project!!
