Properties of Matter

1
Properties of Matter

• Physical and Chemical Changes

2
What is a property?

• A distinctive attribute or quality of something
• An observation

3
Two Types of Properties

• There are two types of properties
• Physical Properties
• Chemical Properties

4
Physical Properties

• Physical properties are properties that you can
  observe without changing the identity of the
  material.
• For example A rubber band is stretchy. If you
  stretch a rubber band, it is still a rubber band.

5
Physical Properties

• Physical properties are descriptive.
• They include the appearance and behavior.
• The appearance of the item is how it looks,
  feels, tastes, as well as any measurable
  characteristics like mass, volume, etc.
• The behavior of an item is going to be how it
  reacts with certain other things. For instance,
  metals are usually attracted by magnets.

6
Common Physical Properties

• Magnetic
• Dense
• Color
• Size
• Shape

7
Physical Change

• A change in the size, shape, or phase of matter
  is known as a physical change.
• A physical change is one in which the basic
  identity of the object does not change!
• Another way to look at it is that a physical
  change is one which you can change back.

8
Common Physical Changes

• Physical changes change the appearance of a
  substance, but the chemical makeup does not
  change.
• Examples of Physical Changes include
• Size
• Shape
• Phase (solid, liquid, gas)
• Dissolving

9
Chemical Properties

• A characteristic that indicates it can undergo an
  chemical change.

10
Common Chemical Properties

• Flammability
• Reactivity
• Rust (Oxidation)

11
Chemical Change

• The changing of one substance into another.
• New substances are produced because of the
  breaking of chemical bonds.
• ONE WHICH YOU CANT CHANGE BACK

12
Detecting Chemical Change

• A new substance is ALWAYS produced in a chemical
  change.

13
Chemical Changes

• New substances are produced by the making and/or
  breaking of bonds.

14
Indicators

• There are five indicators that help us to know
  that a chemical change is taking place
• Unexpected Color Change
• Energy Transfer
• Precipitate Produced
• Odor Produced
• Gas Produced