Solids Liquids And Gases

Question 1

Give three facts about solids

Answer 1

• Solids are tightly packed particles
• solids can change states
• solids stay the same shape
• solid particles are in organised rows

Question 2

Give three facts about gases

Answer 2

• Gases are flammable
• gases can be dangerous
• Some gases are invisible
• gas particles do not touch
• natural gas is a fossil fuel
• gas particles move around

Question 3

What is diffusion?

Answer 3

Diffusion is the movement of particles from a high concentration to a low concentration.

Question 4

What temperature of water particles move the fastest and why?

Answer 4

Hot water particles diffuse the fastest.

This is because when particles are heated they have more energy so the faster they can move

Question 5

Describe how the gas particles inside a balloon and the gas particles outside the balloon work with each other to keep the balloon inflated.

Answer 5

Gas particles inside the balloon move fast in all directions.
Gas particles inside the balloon hit the sides of the balloon, pushing outwards on the balloon.

The gas particles in the air outside the balloon are also hitting the balloon. They are pushing inwards on the balloon.

The OUT push and the IN push both cancel each other out, so the balloon stays the same shape.

Question 6

What is the way gas particles push on a surface called?

Answer 6

Gas pressure.

Question 7

What is the process of a solid turning to a liquid called?

Answer 7

Melting

Question 8

What is the process of a liquid turning to a gas called?

Answer 8

Evaporating

Question 9

What is the process of a gas turning o a liquid called?

Answer 9

Condensing

Question 10

What is the process of a liquid turning to a solid called

Answer 10

Freezing

Question 11

What is the process of a solid turning straight to a gas called?

Answer 11

Sublimation

Question 12

When particles get hotter they gain energy and start moving around more. Because they are moving they take up more what?

Answer 12

They take up more space and also spread out.

Question 13

How does the crushing can experiment work?

{crushing can experiment:

• a can is filled with a few milimeter of water
• the water is heated to water vapour
• the can is placed in cold water and crushes in on itself}

Answer 13

The water vapour inside the can and he air particles outside of the can are cancelling each other out, meaning the can keeps its shape.

However when placed in water the water vapour condenses and is no longer pushing on the inside of he can, this means the aide particles on the outside of the can are pushing harder than the air particles on the inside, because their are less particles on the inside than out due to the inside vapour somewhat consisting of water which is now no longer pushing out.

Due to the outward pressure being greater the can is crushed.

Question 14

Give three facts about liquids

Answer 14

• Liquids are loosely packed particles
• liquids change to fit the shape of their container
• liquid particles to have
• liquids move
• liquids can change states