CHAPTER 3

PROPERTIES AND CHANGES OF MATTER

SEC 1PHYSICAL & CHEMICAL PROPERTIES

What you’ll learn?

• IDENTIFY PHYSICAL AND CHEMICAL PROPERTIES

• CLASSIFY OBJECTS BASED ON PHYSICAL PROPERTIES

Why it’s important?• Understanding the different

properties of matter will help you to better describe the world around you.

New Vocabulary:

• Physical Property• Chemical Property

All substances have properties…Including people

Example:People can be identified by their …

What are properties?• Matter has observable and

measurable qualities.• We can use general properties

to identify substances.• Two basic types of properties of

matter: Physical properties and Chemical properties…

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.

More EXAMPLES - Physical• size, shape, freezing point, boiling

point, melting point, magnetism, viscosity, density, solubility, luster and many more.Density- amount of mass in a

volumeSolubility- number of grams of one

substance that will dissolve in 100g of another substance at a given temp.

PHYSICAL PROPERTIES

Dependent on size Mass, weight, volume

Independent of size Density, melting, boiling, solubility, magnetic, state and color

Chemical Properties• A characteristic that cannot be

observed without altering/changing the substance.