1. Physical properties
Traits that can be observed or measured without changing the composition of matter.
Used to observe and describe matter.

2. Chemical properties
Describes how a substance will react with another substance to form new materials.
Cannot be observed without changing the original material.

3. Differentiate physical and chemical changes.
Identify indicators of Physical/Chemical Changes

4. Involves a change in shape or a change in state of a substance.
Physical change
Involves a change in shape or a change in state of a substance. H O

5. It is a chemical change if one is observed: A change in colour.
When new substances with new properties are formed – a chemical reaction has happened.
It is a chemical change if one is observed:
A change in colour.
A change in smell.
3. Fizzing or bubbling
(a gas is being made)

6. Oxygen gas - place a glowing splint in to a small amount of the unknown gas.
If the splint relights the gas is oxygen.

7. Hydrogen gas - place a flaming splint into a small amount of the unknown gas.
If it "pops" then
the gas is hydrogen.

8. 4. A new solid forms from a mixture of liquids or the mixture goes cloudy.
This is called precipitate formation.
A change in temperature
Reaction products light.