What is a matter : matter is a substance that have mass and can occupy space Examples of matter = water air plants and animals Difference between mass and weight mass ! weight 1=mass is the to! weight is the f tal quantity of p !orce acting on articles in a sub!substance due stance. !to gravitational. pull on it 2=mass is cons!weight varies a rant it does not vary !s the force of gravity change from place to place on the earth surface 3=mass is a scalar quantity it has magnitude but no direction weight is a vector quantity it has both magnitude and direction 4=the si unit for mass is Mole the si unit for weight is the newton STATES OF MATTER 1=solid state 2=liquid state 3=gaseous state PROCESSING INVOLVED IN THE CHANGE OF MATTER ARE 1=MELTING 2=Vapourisation 3=condensation/liquefaction 4=solidification/freezing 5=sublimation