CH302 Vanden Bout/LaBrake Spring 2012

Vanden Bout/LaBrake

CH301

GAS PRESSURE

Day 2

CH302 Vanden Bout/LaBrake Spring 2012

Important Information

USE PIAZZA FOR QUESTIONS……..LEARN ABOUT WEBSITE

COMPLETE ONLINE SURVEYS RECEIVED IN THE EMAIL

HW1 WAS DUE THIS MORNING 9AMLM1 WAS DUE THIS MORNING 9AMREADINESS ASSESSMENT CLOSES 5 PM TODAY

LM2, LM3, LM4, LM5 DUE THURSDAY MORNING 9AM

UNIT2 DAY2 VDBMonday, September 03, 20129:34 PM

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CH302 Vanden Bout/LaBrake Spring 2012

What are we going to learn today?

Model GasConcept – Gas Pressure

Relationship Pressure and Volume

CH302 Vanden Bout/LaBrake Spring 2012

DAY 1 & DAY 2 LEARNING OUTCOMES

Perform stoichiometric calculations using masses, moles, limiting reagents and percent yields

Define the terms metacognition, flipped classroom, student centered learning, mindset and be able to relate them to nes learning in this course

Explain and apply Boyles, Charles, and Avogadro’s Gas Laws to observations of gas behavior

Describe the concept of pressure from a macroscopic and microscopic perspective.

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CH302 Vanden Bout/LaBrake Spring 2012

CONCEPT PREASSESS

INDEPENDENT WORK

1 MINUTE PER QUESTIONDO YOUR BEST!

CH302 Vanden Bout/LaBrake Spring 2012

In the small particle model of a gas -an atom is treated the same as a

molecule.

a) TRUE

b) FALSE

QUIZ: CLICKER QUESTION 1 (NO TALKING points for CORRECT answer)

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CH302 Vanden Bout/LaBrake Spring 2012

Describe a Gas

PHYSICAL DESCRIPTION:

VOLUMEPRESSURE

TEMPERATUREAMOUNT

CH302 Vanden Bout/LaBrake Spring 2012

Describe a Gas

PHYSICAL DESCRIPTION:

VOLUMEPRESSURE – most abstract property

TEMPERATUREAMOUNT

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CH302 Vanden Bout/LaBrake Spring 2012

Consider Pressure

HEAVY PERSON LIGHT PERSON

Stand Flat Footed

Stand on Tippy Toe

CH302 Vanden Bout/LaBrake Spring 2012

Concerning the heavier vs the lighter student, which of the following answers is correct?

a) Both exerted the same pressure when flat footed.b) Both exerted the same pressure when on tippy toes.c) The students did not exert a pressure on the ground – only a force.d)The heavier person exerted more pressure on the ground in both cases.e)The heavier person exerted more pressure on the ground when flat footed, but the two individuals exerted the same pressure when on tippy toes.

POLLING: CLICKER QUESTION 2 (points for everyone)

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CH302 Vanden Bout/LaBrake Spring 2012

Could you do a calculation to verify your answer choice?

CH302 Vanden Bout/LaBrake Spring 2012

CH302 Vanden Bout/LaBrake Spring 2012

Collapsing Can Demo

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CH302 Vanden Bout/LaBrake Spring 2012

Collapsing Can Demo

CH302 Vanden Bout/LaBrake Spring 2012

The can collapsed because the pressure:

POLLING: CLICKER QUESTION 3

a) inside the can was greater than outside the canb) outside the can was greater than inside the canc) inside the can was the same as the pressure outside the

can but the metal contracted when chilledd) It was just a magic trick to impress us

CH302 Vanden Bout/LaBrake Spring 2012

Do the syringe activity

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CH302 Vanden Bout/LaBrake Spring 2012

CH302 Vanden Bout/LaBrake Spring 2012

Balloon in Vacuum Demo

Turn on vacuum pump

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CH302 Vanden Bout/LaBrake Spring 2012

What did we learn today?

Concept of pressure and magnitude of pressure units – more quantitative information in LM

Relationship between pressure and volume of a gas – Law of NatureLaws of Nature have predictive power.

Start thinking in a microscopic view of what is occurring on a macroscopic scale – thinking like a chemist.

Anything Else? Please Share….

CH302 Vanden Bout/LaBrake Spring 2012

Explanation Space

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