1. Properties of Matter and Chemical Reactions
Science 9

2. How many properties of matter can you remember from last year?

3. Properties of Matter can be broken down into 2 categories
Physical: Characteristics that can be observed or measured without changing chemical identity
Chemical: Ability of matter to react with another substance to form one or more different substances

4. Physical Properties Viscosity, state of matter
Melting point, boiling point
Colour, malleability, texture, hardness
Conductivity

5. Chemical Properties
Combustibility, react with acid, react with oxygen, lack of reactivity (innate)

6. Chemical Reactions
One or more pure substances interact to form a different substance or substances
Example: Dancing raisins demo
The reaction is: CH3COOH(aq) + NaHCO3(aq) → NaCH3COO(aq) + H2O(l) + CO2(g)
Acetic acid + sodium bicarbonate

7. Can you think of any other chemical reactions?