EXERCISE 1

Activity 1

Complete the chart with the characteristic state of matter by getting the information from the strips.

States of matter
The characteristic of the state
Illustrate the arrangement of the particles.


SOLID

1.______ shape and volume
2.Cannot be___________
3.Particles are packed
_______________in orderly manner
4._____________ forces between particles
5.Particles__________and ______________
about fixed positions.


LIQUID

1. ____________ volume.
2.Does not have a fixed __________
3.Cannot be __________
_________are packed closely together
but not in orderly____________
4.They __________each other.


GAS

1.Does not have a
fixed_________
or____________
2.Easily can be ____________
3.Particles are very _________
and in a ___________ motion
4._____________ forces
between particles
5.Particles can vibrate rotate and
move ___________________



Activity 2

Use kinetic theory to explain what happen to particles when heated. Use the words below to help you fill in the blanks

-randomly
-expansion
-energy
-weakens
-breaks down
-increases
-vibrate
-volume
-faster
-move around each other


1.When a solid is heated, the particles gain … ………………and ……… ………….. faster.

2.Vibration makes the particles move away from neighbouring particles. This cause an increase in the … ……….. of the solid. …………….. … has taken place

3.Further heating causes the forces of attraction to …… …….The solid structure …………… ….
The particles can now............................................................... ………… Melting has taken place.

4.When a liquid is heated, their average energy ……… ……………………….and the particles move even … ………

5.The forces of attraction between the particles are overcome and the particles are able to move…………... Boiling has taken place