Gas laws

Michaela is babysitting little Tommy Turner, who is known to be a terror. Michaela answered the phone when Tommy's parents called to check in him, leaving Tommy unattended for three minutes. During that time Tommy turned the oven on its hottest setting and placed his new police car mylar balloon in the oven. What will most likely happen to his balloon?

The increased temperature will cause the balloon to grow and pop.

Which change to the system would cause the freely-moving piston to lower?

place the system in an ice bath

A DECREASE in the density of a sample of a gas inside a balloon could be caused by

taking a balloon outside on a hot day

Pushing down on the piston causes an increase in pressure and a decrease in the volume of the gas in the cylinder. This is BEST explained by the fact that

there is a large relative distance between gas molecules.

Given the diagram showing gas molecules in different containers, a reasonable inference could be made that there is a relationship between:

volume and pressure

Jessica took a mylar balloon outside on a very cold day. As she waited for the bus the balloon began to shrink. What is the best explanation of this?

As the particles became cooler, they lost energy and moved less, resulting in less pressure on the balloon.

Pablo's experiments confirm the relationship between pressure and the number of gas molecules. As the pressure in a system increases, the number of gas molecules increases. Pablo conducted many trials. What can you conclude about the relationship between pressure and the number of gas molecules?

Pressure and the number of gas molecules are dircetly related

A student puts air into a balloon and ties it shut. Which action listed below will lead to a decrease in pressure inside the balloon?

Sticking the balloon in a freezer.

6 A.M. - 30 PSI9 A.M. - 32 PSI1 P.M. - 35 PSI Amy measured the tire pressure of her truck that was parked outside after a cold night. The daytime temperature reached a nice 65 °F. Assume Amy's tires do not have any leaks. Explain the change in tire pressure.

The air molecules heated inside the tire causing them to move faster exerting more pressure on the inside walls of the tires.

What is going to happen to a balloon filled with helium that is left in a car over night when the temperature drops approximately 20 degrees? (There are no holes in the balloon.)

The balloon is going to look somewhat deflated due to the decrease in volume.

Why might a balloon, that is inflated almost to its capacity, pop or explode on an extremely warm day?

The balloon might pop due to the increase in the volume of the gas.

A person opens a 2-liter bottle of cola at a picnic. If the cap is left off the bottle, the cola will become 'flat' or lose it's carbonation. Which statement below BEST summarizes why the cap must be kept tightly in place if the cola is to remain fresh?

The cap keeps the pressure of the gas in the bottle at a high level preventing carbon dioxide from leaving the solution.

Explain why a balloon expands when taken to a higher elevation if the temperature remains constant?

The decrease in atmospheric pressure inside the balloon causes it to expand

If you fill up a balloon with a small amount of air, then set it in direct sunlight, you will see that the balloon expands. This expansion is due to an increase in volume, which results from

an increase in the temperature of the air in the balloon.

When the burner in a hot air balloon is turned on, the temperature of the air in the balloon ________ causing its volume to _________ and the balloon _________.

increases, expand, rise