1. Physical Property
Can be observed or measured without changing the matter’s identity
Does not involve a chemical change
Examples:
Density
Color
Hardness
Ductility
Malleability
Solubility
Size
Texture

2. Density m D v The amount of matter in a given space or volume
Mass divided by volume
Units: g/mL
Knowing the density can tell you if an object will float or sink in water
If object is less dense then water, it will float
If object is more dense then water, it will sink m D v

3. Physical Changes
A change that affects one or more physical properties of a substance
Does not change chemical properties
Examples:
Crushing a can
Melting ice
Painting a wall
Sanding wood
Sugar water
Ripping paper

4. Chemical Properties
Describes matter based on its ability to change into new matter that has different properties.
Flammability
Ease of a substance to ignite
Reactivity
Ability of a substance to undergo a chemical reaction
With Oxygen
With Acid
Combustibility
Ability of a substance to explode or implode

5. Chemical Properties vs Chemical Changes
When one or more substances are changed into new substances that have new and different properties it is a chemical change
Chemical properties of a substance describe which chemical changes will occur and which chemical changes will not occur
Chemical changes are the process by which substances actually change into new substances.

6. Chemical Change Signs of chemical change:
Color change
Gas production
Change in temperature
Precipitate formed (precipitate – a solid formed from solution)
Change in overall properties
Chemical changes are hard to reverse
Some chemical changes can be reversed by more chemical changes

7. Physical vs Chemical Did the composition/identity change?
The composition/identity of an object is the type of matter that makes up the object and the way that the matter is arranged in the object
Physical changes do not change the composition of a substance
Chemical changes do alter the composition of a substance