in the world is matter?
A. Anything that moves
B. Anything that takes
C. Something that cries.
takes up space!
Of matter are…
How does matter change?
Put on your
Changes of state
Changes of state – heating curve
Changes of state – cooling curve activity
All substances are made up of particles (atoms, ions or molecules).
These particles are attracted to each other, some strongly and others weakly.
These particles move around (i.e. have kinetic energy).
The kinetic energy of particles increases with temperature.
TIME FOR A SONG
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.