Unit 8 - Gases

Question 1

Define pressure

Answer 1

The amount of force the gas particles put on a surface as they collide with it

Question 2

Relationship between temperature and pressure

Answer 2

DIrect: As temperature increases, the speed of particles increases which increases the number of collisions, increasing the force on the container, and thus increasing the pressure

Question 3

Relationship between amount and pressure

Answer 3

Direct: Increase in the number of gas particles means an increase in the number of collisions, which causes an increase in the force on the container, thus causing an increase in pressure

Question 4

Relationship between amount and volume

Answer 4

Direct: Increase in the number of gas particles causes an increase in the number of collisions, which causes an increase on the force on the flexible container, thus expanding it and causing an increase in volume

Question 5

Relationship between temperature and volume

Answer 5

Direct: Increase in temperature causes an increase in the speed, causing an increase in the strength and number of collisions, which increases the force on the flexible container and thus causes it to expand, increasing the volume

Question 6

Relationship between volume and pressure

Answer 6

Inverse: Increase in the volume means molecules will be more spread out, causing fewer collisions to happen, and thus less force being put on the container, which causes a decrease in pressure

Question 7

Relationship between amount and temperature

Answer 7

Inverse: An increase in the temperature causes an increase in the particle speed, causing an increase in the strength of the collisions. If the container is rigid and open, those particles will escape thus reducing the amount.

Question 8

What is standard temperature and pressure?

Answer 8

Pressure is 1 atm, temperature is 273K, n is 1 mol, and volume is 22.4L

Question 9

Ideal Gas Law Constant

Answer 9

.08206