Intermolecular forces

Question 1

Name the phases of matter

Answer 1

solid
liquid
gas

Question 2

Name the phases of matter (solid)

Answer 2

have a definate shape
definite volume
high density
they are incompressable and melt to form liquids

Question 3

Name the phases of matter(liquids)

Answer 3

have a definite volume
no definite shape
less dense than solids
slightly compressible

Question 4

Name the phases of matter(gasses)

Answer 4

have no definite volume
no definite shape 
low density
very compressible
the state of the gas depends on its pressure and temperature

Question 5

state the kinetic molecular theory

Answer 5

all matter is made up of small particles which are continually moving .Some molecules move faster than others ,but the average kinetic depends on the temperature

Question 6

state how particles behave in solids

Answer 6

in a fixed position with very little space between them so solids are dense. Forces hold the particles in place but they can vibrate. The vibration increases on heating and the solid expands .At the melting point the particles vibrate so much that they break away from

Question 7

state how particles behave in liquids

Answer 7

there are larger spaces between particles so the density of a liquid is less than that of the solid .Particles can move throughout the liquid but forces prevent them from leaving the liquid. On heating the particles move faster and further apart so the liquid expands. When the liquid boils the particles have enough energy to overcome the forces holding them and form a gas.

Question 8

state how particles behave in gases

Answer 8

the forces are not strong enough to hold the particles together so they spread out and fill the container. They collide with each other and the side of the container .On heating the particles move faster and hit the sides of the container more often. This means the pressure in the container increases.

Question 9

what is interatomic

Answer 9

they join elements together to make compounds.

Ionic bonds hold positive and negative ions into a sloid crystal lattice.

Question 10

what are intermolecular forces ?

Answer 10

forces that exist between molecular units in the solid, liquid or gas phase

Question 11

elaborate on interatomic bonds.

Answer 11

covalent bonds join atoms together to make molecules .Molecular compounds can exist as solids, liquids and gases. Since the gases can be cooled and compressed to form liquids and solids there must be forces between molecules.