P3–2A–006—17-02-2020

This lesson
  • Gas and pressure
  • pV= constant
  • Intro thermometer practical 
  • Closing of Chapter 5
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Slide 1: Tekstslide
Natuurkunde / ScheikundeMiddelbare schoolvwoLeerjaar 2

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This lesson
  • Gas and pressure
  • pV= constant
  • Intro thermometer practical 
  • Closing of Chapter 5

Slide 1 - Tekstslide

Goals
  • Explain why a gas exerts pressure
  • Name two factors that influence the pressure a gas exerts
  • Explain the formula pV = constant
  • Apply pV = constant in calculations

Slide 2 - Tekstslide

Gas and pressure

Slide 3 - Tekstslide

Gas and pressure

Slide 4 - Tekstslide

kinetic theory of gases
  • molecules are very small relative to the space in between them
  • the molecules are in constant ramdom motion
  • Colide freqeuently with eachother and the walls of the container

Slide 5 - Tekstslide

Slide 6 - Tekstslide

Gas and pressure
  • Does gas exert pressure? yes / no
  • Explain why
  • Two factors that influcence it + an explination for each factor

Slide 7 - Tekstslide

pV = constant
  • p: pressure in Pa (1 Pa = 1 N/m2)
  • V: volume in m3

Slide 8 - Tekstslide

An avarage baloon holds 11400 cm3 of air under a pressure of 101 kPa

a) What would be the volume of this amount of gas under a pressure of 150 kPa?
b) What would be the volume of this amount of gas under a pressure of 50 kPa

Slide 9 - Tekstslide

A gasbottle holds 25000 cm3 of gas under a volume of 200000 pa


a) What would be the pressure in the gas bottle if the gas had a volume of 20000 cm3 ?
b) What whould be the volume of the gas if there would be a pressure of 180000 pa on it?

Slide 10 - Tekstslide

Intro themometer practical
  • What is a liquid-in-glas thermometer?
  • How does such a themomter work?
  • What is the celcius scale calibrated to?
  • How can you make a liquid-in-glas celcius scale themometer yourself?

Slide 11 - Tekstslide

Closing chapter 5
Make a summary of chapter 5 
integrated in the mindmap of properties of mater
include a summary about a themomter

Slide 12 - Tekstslide

Homework
Make a summary of chapter 5 
integrated in the mindmap of properties of mater
include a summary about a themomter

Slide 13 - Tekstslide

What did we cover this lesson?

Slide 14 - Tekstslide

Goals
  • Explain why a gas exerts pressure
  • Give two factors that influence the pressure a gas exerts
  • Explain the formula pV = constant
  • Apply pV = constant in calcualtions

Slide 15 - Tekstslide

Homework
Make a summary of chapter 5 
integrated in the mindmap of properties of mater
include a summary about a themomter

Slide 16 - Tekstslide

Next lesson
  • Preparing for the practical
  • more about properties of mater

Slide 17 - Tekstslide