1. Physical Property
Can be observed with the senses or measured without changing the substance
Examples:
Melting point
Boiling point
Color/shape
Density
Mass

2. Physical Change
A change that does not involve altering the identity of the substance
Examples:
Freezing
Melting
Boiling
Cutting
Grinding

3. Chemical Property
Relates to a substance’s ability to undergo a change into a different substance
Examples:
Ability to rust
Flammable
Ability to react with an acid
Decomposes in light

4. Chemical Change
A change where one or more substances is converted into different substances (a chemical reaction)
Examples:
Rotting
Burning
Fermenting
Cooking

5. So how do I recognize a chemical change??

6. So how do I recognize a chemical change??
Bubbling – production of a gas
Heat
Light
Precipitate – a solid formed during a reaction
Unexpected color change

7. Chemical change = chemical reaction and is written as
Reactants  Products
This is
what you
make
This is what
you start
with