P3–2A–005—12-02-2020

• Natuurkunde / Scheikunde
• Middelbare school
• vwo
• Leerjaar 2

This lesson

• A demonstration
• A video on eveporation
• Gas — volume and pressure
• Calculations

Goals

• Recaping previousl esson
• Understanding gas and pressure
• Understanding the relationship between gas and pressure
• Applying the formula 'p x V = constant'

A demonstration

A video on evaporation

Link

• is evaporation the same as boiling? – yes/no
• Describe the process through which which water evaporates
• How come a liquid cools down when it evaporates?

A demonstration

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

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?

Goals

• Recaping previousl esson
• Understanding gas and pressure
• Understanding the relationship between gas and pressure
• Applying the formula 'p x V = constant'

About next lesson(s)

Preparing for a practical in the project week