is the MATTER?
in the world
A. Anything that moves
B. Anything that takes up space. C. Something that cries.
Anything that takes up space!
Of matter are…
How does matter change?
Put on your thinking cap!
Changes of state
solid melting boiling liquid gas
Changes of state – heating curve
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
4. The kinetic energy of particles increases with
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.