•OBJECTIVE:
Students will describe and explain orally and in writing, how gases behave
according to Boyle’s Charles’, and Gay-Lussac Laws.
•W.O.D.-Persevere-
to persist, to remain constant
•WARM-UP
1.DESCRIBE
and EXPLAIN, what happens to the (a) volume of a balloon when it is left in a
closed car on a hot summer day (b) volume of a balloon as it moves from sea
level to the top of a mountain.
Home work
•Study
for a test on Boyle’s, Charles, and Gay-Lussac’s laws
1.Boyle’s
law-temperature is kept constant
Pressure and volume vary INVERSELY.
P1V1 = P2V2
2. Charles’ law-pressure is kept constant
Volume and absolute temperature vary
DIRECTLY
V1/T1 = V2/T2
3. Gay-Lussac’s law-volume is kept
constant
Pressure and absolute temperature vary
DIRECTLY
P1/T1 = P2/T2
Practice problems
1.Page
419 #7 & 8
2.A
sample of gas helium gas is compressed from 4.0 L to 2.5 L at a constant
temperature. If the pressure of a gas in the 4.0 L volume is 210 kPa,
what will the pressure at 2.5 L
3.Page
421 #9 & 10
4.A
sample of gas at 40°C occupies a volume of 2.3 L. If the temperature is raised
to 75°C , what will the volume be if the pressure is kept constant.
CYU
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