Boyle’s Law Online Lab http://bit.ly/3Mzql

Evaluation/Assessment: Objective: Today I will be able to: 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 Correctly solve Boyle’s Law Problems 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 Explain: Intro to gases Notes Engage and Explore: Boyles Law Online Lab Explain: Boyle’s Law Notes Elaborate: Boyles Law Practice 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: 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 Correctly solve Boyle’s Law Problems

Homework Finish Boyle’s Law Online Lab Finish Boyles Law Practice

Agenda Warm – Up Intro to Gases Notes Boyles Law Online Lab Boyles Law Notes Boyles Law Practice Exit Ticket

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 Volume Pressure Pressure Conversions Must be measured in Kelvin oC + 273 Volume mL or Liters Pressure 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

Explains the relationship between pressure and volume of a gas 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.

Boyle’s Law

Boyle’s Law If the pressure of a gas is increased, the volume is decreased Temperature remains constant This is an inverse relationship P1V1 = P2V2

Boyle’s Law (740.0)(16.0) = (550.0)(V2) V2 = 21.5 L Example: 16.0 L of hydrogen gas exerts a pressure of 740.0 mm Hg at standard temperature. At what volume will the gas exert a pressure of 550.0 mm Hg? (Be sure your units of volume and pressure agree!) (740.0)(16.0) = (550.0)(V2) V2 = 21.5 L

Boyle’s Law Practice Complete the practice at your desk. Whatever is not finished will be your homework.

Exit Ticket Why did all 4 of the gases have the same values for pressure and volume? Why does volume increase as pressure decreases? Why should scuba divers be concerned with Boyle's Law?