Docstoc

matter and the particle model ppt

Document Sample
matter and the particle model ppt Powered By Docstoc
					What
is the MATTER?

On earth

A.

B.

C. ?????

What
in the world
is matter?

Matter is…
A. Anything that moves
B. Anything that takes up space. C. Something that cries.

Anything that takes up space!

The

types

Of matter are…

Solids

Liquids

Gases

How does matter change?

Put on your thinking cap!

Changes of state
solid melting boiling liquid gas

freezing

condensing

Changes of state – heating curve
boiling 
liquid  gas

melting 
solid  liquid

condensing

freezing

time

Changes of state – cooling curve activity

Changes of state activity

TIME FOR A SONG

The particle model

1. All substances are made up of particles (atoms,
ions or molecules).

2. These particles are attracted to each other, some
strongly and others weakly.

3. These particles move around (i.e. have kinetic
energy).

4. The kinetic energy of particles increases with
temperature.

Temperature and energy

What is evaporation?
Evaporation occurs when the particles in a liquid escape to form a vapour. Evaporation can occur at any temperature but it occurs most rapidly at a liquid’s boiling point. The particles that escape take some energy from the remaining particles and so the temperature of the liquid falls.


				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:1077
posted:6/19/2008
language:English
pages:15