P6.6 Gas pressure and temperature Flashcards
1
Q
Why does increasing the temperature of any sealed gas container increase the pressure?
A
The energy transferred to the gas when it’s heated increases the kinetic energy of its molecules - so average kinetic energy of the gas molecules increases when the temperature of the gas is increased
Average speed increases when the kinetic energy increases - so molecules on average hit the container surfaces with more force and more often
2
Q
What is the evidence of the random motion of gas molecules?
A
The unpredictable motion of smoke particles
3
Q
How is pressure of a gas caused by?
A
The random impacts of gas molecules on surfaces that are in contact with the gas
