Part One

Properties of Matter

Physical Properties

Physical property is a property that can be observed without changing the identity of the substance.

Physical Properties

Examples: viscosity conductivity malleability hardness magnetism

melting point boiling point density color

Physical Properties

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

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

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.

Physical Properties to separate mixturesTwo 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.

Physical ChangeA change in the appearance, without changing the composition of the material.

• Can be reversible, or irreversible• Substance may seem different, but

the way the atoms link up is the same.

It is a physical change if . . .

It changes shape or size

Or the substance changes phase.

It dissolves.

Part 2

Properties of Matter

Chemical Properties

Chemical property is any ability to produce a change in the composition of matter.

Chemical Properties

flammability

reactivityMaterial’s ability to burn in the presence of oxygen.

How readily a substance combines chemically with other substances.

Examples of chemical properties . . .

Chemical ChangesChemical changes occur when a

substance reacts and forms one or more new substances.

Formation of a precipitate.

A change in color.

Production of a gas.

You know a chemical change has occurred when . . .

Chemical Properties

Chemical properties are characteristics involved when a substance interacts with another substance to change its chemical make-up.

Flammability Rusting Creating gas bubbles

Creating a new chemical

product

Reactivity with water

pH

physical

What kind of change is it?

What kind of change is it?

chemical

What kind of change is it?

physical

What kind of change is it?

physical

What kind of change is it?

chemical

What kind of change is it?

physical

Alike? Different?Draw a double bubble map in your notes to compare and contrast physical and chemical properties.