Topic 2 States Of Matter

Question 1

What are the states of matter

Answer 1

Gas solid and liquid

Question 2

What does the state the substance is in depend on

Answer 2

How strong forces of attraction are between the particles of the material

Question 3

What determines how strong the forces are between particles

Answer 3

Material (the structure of a substance and type of bonds hold the particles together)
Temperature
Pressure

Question 4

Solid particle model

Answer 4

Strong forces of attraction between particles hold them together in close fix positions to form a regular lattice arrangement
Particles don’t move from the positions so also let’s keep a definite shape and volume
Particles vibrate about their position (the hotter the solid becomes the more they vibrate)

Question 5

Liquid Particle model

Answer 5

There’s a weak force of attraction between the particles randomly arranged and free to move past each other but tend to stick closely together
Have a definite volume but do not keep a definite shape and will flow to fill the bottom of the container
Are constantly moving with random motion- hotter than liquid gets the faster they move( this causes liquids expand slightly when heated)

Question 6

Gas particle model

Answer 6

The force of attraction between the particles is very weak they’re free to move and are far apart the particles in gas travel in straight lines
Glasses don’t keep a definite shape or volume and will fill any container
Move constantly with random motion part of the gas gets the bus they move gases either expand when heated or the pressure increases

Question 7

What Does aqueous mean

Answer 7

Dissolved in water