Physics - Density

Question 1

The preasure of a gas in a sealed container increases as the …………………….. increases?

Answer 1

Missing word: Temperature

Question 2

Complete the sentence: The internal energy store of the gas …

Answer 2

… does not change

Question 3

Suggest one reason scientists think that it is a good idea to clean kitchen surfaces with a steam machine.

Answer 3

Hot steam would kill microbes/bacteria on the kitchen surface

Question 4

Describe the formation of particles in a gas

Answer 4

The molecules in a gas are far apart and hot in contact. The particles have the most energy, and are free to shoot around in alot of space compared to solids and liquids.

Question 5

Describe the formation of a liquid

Answer 5

The particles in a liquid are touching tight together but are free to move; sliding over one another. They have reasonable amounts of energy, but low in contrast to a gas.

Question 6

Describe the formation of a Solid

Answer 6

The particles in a solid have the least amount of energy, and are compact tightly together in an ordered formation or rows and lines. They vibrate when heated, but do not break formation (unless melted - where it gains energy and turns into a liquid).