States Of Matter

Question 1

What is a liquid in terms of particles?

Answer 1

Close packed groups (clumps) of particles able to move past each other.

Question 2

What is the definition of a gas in terms of particles?

Answer 2

Particles far apart moving in random motion

Question 3

Does a solid and liquid or a gas have a ‘fixed volume’ or a ‘no fixed volume’? and what shapes do they take?

Answer 3

Solids – fixed volume – Fixed shape
Liquids – fixed volume– Adapt shape of container
Gases – no fixed volume – no fixed shape

Question 4

What is it called when a solid turns into a liquid?

Answer 4

Melting

Question 5

What is it called when a liquid turns into a solid?

Answer 5

Freezing

Question 6

What is it called when a gas turns into a liquid?

Answer 6

Condensing

Question 7

What is it called when a liquid turns into a gas?

Answer 7

Boiling / evaporating

Question 8

What is it called when a solid turns into a gas, or a gas turns into a solid?

Answer 8

Sublimation

Question 9

How do you increase the energy of particles?

Answer 9

Heating (particles get further apart)

Question 10

How do you decrease the energy of particles?

Answer 10

Cooling (particles get closer together)

Question 11

What is a solid in terms of particles?

Answer 11

Close packed, regular arrangement of particles vibrating about a fixed point. Particles held together by strong attractions ( bonds )