KMT Review Questions (due 4/5 at 11:59 PM)

Instructions: Copy and paste the Questions into the submission box below.  Answer all questions in THE COLOR RED. 

1. When describing the molecules in gas, what is in between the gas molecules?

2. Imagine a gas in a container. The gas molecules are moving freely through the space inside the container.  As the molecules move, they collide with one another and with the sides of the container.

a) As you increase the temperature, what will happen to the speed of the molecules? What will happen to the number of collisions per second?

b) What happens to the force of the collisions between molecules as the temperature is increased?

3. Use the kinetic molecular theory to explain each of the following. Use complete sentences.  You may use diagrams to illustrate or clarify your answers

a) Why are gases compressible?

b) Why are solids rigid?

c) Why are liquids relatively incompressible?

d) Why does the pressure increase when more molecules are added to a non-flexible container?

Decide which of these two explanations (X or Y) is the better for each situation. Place X or Y on the line provided.

X - The distance between molecules is changing.

Y - The average speed of the molecules is changing.

a) The air in a room is getting colder. _______

b) Gas leaves a hair spray can after being contained inside. _______

c) The metal handle on a frying pan gets hot. _______

d) Nitrogen gas is compressed until it becomes a liquid. _______

e) A lump of gallium metal melts at human body temperature. _______