Unit 1�- MATTER -
- Matter & its properties-
1- What is matter?
MATTER
2- States of matter
3- Substances & mixtures
4- Properties of matter
5 Density
1- WHAT IS MATTER?
Matter is all around us.
Matter is made up of tiny particles called: atoms
Atoms join together to form: molecules
Matter has:
1- WHAT IS MATTER?
mass
(amount of matter)
volume
(amount of space)
&
2- STATES OF MATTER
Matter can be found in different states:
solid
liquid
gas
2- STATES OF MATTER
SOLIDS:
have a definite shape and a definite volume.
2- STATES OF MATTER
LIQUIDS:
haven't got a definite shape but they have got a definite volume.
2- STATES OF MATTER
GASES:
haven't got a definite shape or definite volume.
3- SUBSTANCES & MIXTURES
According to composition, matter can be:
pure substances
mixtures
3- SUBSTANCES & MIXTURES
Pure substances:
one type of matter.
3- SUBSTANCES & MIXTURES
Mixtures:
two or more pure substances.
homogeneous
heterogeneous
3- SUBSTANCES & MIXTURES
Homogeneous mixtures:
you can't see all the substances or ingredients.
3- SUBSTANCES & MIXTURES
Heterogeneous mixtures:
you can see some or all the substances or ingredients.
4- PHYSICAL PROPERTIES
magnetism
density
solubility
colour
hardness
elasticity
melting point
boiling point
conductivity
4- PHYSICAL PROPERTIES
4- CHEMICAL PROPERTIES
burning or flammability
rusting
fermentation
PHYSICAL & CHEMICAL CHANGES
5- DENSITY
Float or sink?