Boyle’s Law Online Lab
http://bit.ly/3Mzql
• Objective:
▫ Today I will be able to:
Analyze and label the heating curve of water
Interpret a phase diagram of a gas
Explain the behavior of gases
Correctly convert between different units of pressure, temperature
and volume
 Analyze the relationship between pressure and volume of gases in
Boyles Law by constructing a graph
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
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• Evaluation/Assessment:
▫ Informal Assessment – Monitoring student interactions as they
complete the online lab and practice problems
▫ Formal Assessment – analyzing student responses to the exit
ticket, online lab and practice problems
• Common Core Connection
▫ Use technology and digital media strategically and capably
▫ Make sense of problem and persevere in solving them
▫ Look for and express regularity in repeated reasoning
Lesson Sequence
• Evaluate: Warm – Up
• Explore/Elaborate: Interpreting Heating Curve
of Water
• Explain: Phase Diagrams
• Elaborate: Interpreting Phase Diagrams
• Explain: Intro to gases Notes
• Engage and Explore: Boyles Law Online Lab
• Evaluate: Exit Ticket
Warm - Up
• Brainstorm a list of everything that you know
about gases
• What are some examples of common gases?
Objective
• Today I will be able to:
▫
▫
▫
▫
Analyze and label the heating curve of water
Interpret a phase diagram of a gas
Explain the behavior of gases
Correctly convert between different units of
pressure, temperature and volume
▫ Analyze the relationship between pressure and
volume of gases in Boyles Law by constructing a
graph
Homework
• Finish Boyle’s Law Online Lab
Agenda
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Warm – Up
Interpreting Heating Curve of Water
Phase Diagrams
Interpreting Phase Diagrams
Intro to Gases Notes
Boyles Law Online Lab
Exit Ticket
Interpreting the heating curve of
water
10 minutes to analyze phase
transitions together as a class
Phase Diagram Notes
Phase Diagrams
• Phase diagrams display the state of a substance at
various pressures and temperatures and the places
where equilibria exist between phases.
Vocabulary
• Triple point – all three phases are at equilibrium
Vocabulary
• Critical Point – liquid and gas phases are
indistinguishable from each other making a
supercritical fluid
▫ Critical temperature – highest temperature at
which a distinct liquid phase can exist
▫ Critical pressure – pressure required to bring
liquefaction at the critical temperature
Phase Diagram of Water
• Note the high critical
temperature and
critical pressure:
▫ These are due to the
strong van der Waals
forces between water
molecules.
Interpreting Phase Diagrams
Take 5 minutes to interpret the
diagram. We will review the
answers as a class.
Intro to Gases Notes
What do we remember about
gases?
• Molecules are rapidly moving past or
colliding with each other
• Take the shape of the container they are
in
• No definite volume
Gas Laws
 Study of the relationships between pressure,
volume, temperature, and amount of gases in a
system
Units
 Temperature
 Must be measured in Kelvin
 oC + 273
 Volume
 mL or Liters
 Pressure
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
Atm
Torr
mmHg
Pascals (kPa)
• Pressure Conversions
▫ 1 atm = 760 mmHg
▫ 1 torr = 1 mmHg
▫ 1 atm = 101. 325 kPa
What is STP?
• Standard Temperature and Pressure
• Pressure = 1 atm
• Temperature = 273 K
Boyle’s Law
Explains the relationship between
pressure and volume of a gas
Boyle’s Law Online Lab
Visit the link to view the
simulation for Boyle’s Law and
derive the relationship. Enter the
data in the data table. Make a
graph and answer the questions.
Lab will be completed for HW
Boyle’s Law Practice
Complete the practice at your
desk. Whatever is not finished will
be your homework.
• Use the of
phase
diagram to
Exit Ticket: Phase Diagram
Carbon
explain why carbon
Dioxide
dioxide is a gas at room
temperature.
• Carbon dioxide cannot
exist in the liquid state at
pressures below 5.11 atm;
CO2 sublimes at normal
pressures.
Phase Diagram of Carbon Dioxide