The Particle Model
Solids
Liquids
Gases
Pressure
100
What is the missing word: 'M.... makes up everything around us. M... is actually made up of particles'.
Matter
100
What is an example of a solid?
Various answers accepted.
100
What is an example of a liquid?
Various examples accepted.
100
What is an example of a gas?
Various answers accepted.
100

What causes pressure?

Particles colliding with the walls of a container
200
What happens to particles when they are cooled?
They move slower.
200
TRUE or FALSE: 'You can pour solids'
FALSE. You can only pour liquids and gases.
200
Draw the particle arrangement of a liquid.
Particles should be slowly rolling over each other, but not taking up the whole space.
200
Draw the particle arrangement of a gas.
Answer should have particles completely spread out and arrows showing fast movement.
200

Increasing the size of a container will do what to the pressure?

It will decrease the pressure (more space = less collisions)

300
Can particles change size?
No
300

Describe the particle arrangement of a solid.

Particles are close together in a fixed shape.

300
What happens to a liquid when it EVAPORATES?
Turns into a gas (water vapour).
300
TRUE or FALSE 'Gases can be easily squeezed and poured'
TRUE
300

Increasing the number of particles in a container will do what to the pressure?

It will increase the pressure (more particles = more collisions)
400

Why do solids, liquids and gases have different properties?

The particles are arranged differently.

400

TRUE or FALSE 'The particles in a solid stay completely still'

FALSE They vibrate on the spot.

400

TRUE or FALSE 'Liquids have a fixed volume (amount)'

TRUE Only gases and plasma do not have a fixed volume

400
TRUE or FALSE 'Gas flows'
TRUE
400

Increasing the temperature inside a container will do what to the pressure? 

Pressure will increase (higher temp = particles move faster = more collisions)

500

We are familiar with solids, liquids and gases... but what is the fourth state of matter?

Plasma

500

What happens to a solid during sublimation?

Turns into a gas.

500
TRUE or FALSE 'Liquid particles will spread out to fill the entire space of a room'
FALSE They will remain on the ground due to gravity. They will only fill the whole room if there is enough liquid.
500
What happens to a gas if it is CONDENSED?
Turns into a liquid.
500

Why does the pressure on an aeroplane drop as it increases its altitude?

There are less air particles causing pressure in the upper atmosphere.

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