short answer questions\nmake sure you show all your work, including formulas, to receive full…
short answer questions\nmake sure you show all your work, including formulas, to receive full marks.\nquestion 21 (4 points)\nuse the kinetic molecular theory in order to briefly explain the following statements:\na) the pressure that is exerted by a gas decreases with a decrease in temperature. (2 marks)\nb) gases are easily compressed. (2 marks)
Answer
Brief Explanations:
a)
According to kinetic - molecular theory, temperature is related to the average kinetic energy of gas molecules. When temperature decreases, the average kinetic energy of gas molecules decreases. This means the molecules move more slowly and collide with the walls of the container less frequently and with less force. Since pressure is the result of these molecular collisions with the container walls, the pressure exerted by the gas decreases.
b)
In gases, the molecules are far apart from each other with large empty spaces between them. When pressure is applied, these molecules can be pushed closer together, reducing the volume of the gas. This is why gases are easily compressed.
Answer:
a)
Temperature is related to average kinetic energy of gas molecules. Lower temperature means slower - moving molecules with less frequent and less forceful collisions with container walls, thus lower pressure.
b)
Gas molecules are far apart with large empty spaces between them. Applied pressure can push them closer together, allowing for easy compression.