1. Part One
Physical Properties
Properties of Matter

2. Physical Properties
Physical property is a property that can be observed without changing the identity of the substance.
Examples:
viscosity
conductivity
malleability
hardness
magnetism
melting point
boiling point
density
color

3. Physical Properties Hardness Texture Color Odor Taste Temperature
Physical properties are used to identify, describe and classify matter.
Characteristic of a substance that can be observed (using your senses) without changing the substance into something else.
Hardness
Texture
Color
Odor
Taste
Temperature

4. Examples of Physical Properties
Viscosity of a substance is its resistance to flow.
Examples: water = low viscosity
honey = high viscosity
Conductivity is a material’s ability to allow heat to flow.
Examples: metal = high conductivity wood = poor conductivity

5. Examples of Physical Properties
Malleability of a substance is its ability to be hammered into a thin sheet
Melting and Boiling points are the temperatures at which a solid becomes a liquid and a liquid becomes a gas.
Density of a substance is the ratio of its mass compared to its volume.

6. Physical Properties to separate mixtures
Two common separation methods:
Filtration – process that separates materials based on the size of their particles.
Distillation – process that separates the substances in a solution based on their boiling points.

7. Physical Change It is a physical change if . . .
A change in the appearance, without changing the composition of the material.
It is a physical change if . . .
It dissolves.
Or the substance changes phase.
It changes shape or size
Can be reversible, or irreversible
Substance may seem different, but the way the atoms link up is the same.

8. Done with notes for the day