Chemical and Physical Properties

1
Chemical and Physical Properties
2
Properties of Matter

• Properties can be used to identify the kind of
  matter

3
Physical Properties

• Any property that can be measured without forming
  a new substance is a physical property
• Physical Properties include
• Colour
• Density
• Odour
• Taste
• Texture
• Malleability (ability to be hammered into sheets)
• Ductility (ability to be shaped into a wire)
• Hardness
• Boiling Point
• Melting Point
• Solubability

4
Physical Changes

• Physical change is any change to a physical
  property of a substance
• During a physical change no new substance is
  produced.
• New shapes or forms may appear but the structure
  is still the same. You can change it back to its
  original form easily.
• An example is paper. If I were to crumple up
  paper I have only changed its shape not its form.

5
Measuring Physical and Chemical Properties

• Qualitative A property that can be described and
  not measured
• Quantitative A property that is measured by a
  numerical value

6
Chemical Property

• Any property that causes a reaction
• Any property that causes a NEW substance to be
  formed is a chemical property
• The new substance will have new and different
  properties than before
• Examples of chemical properties include
• Combustibility
• Toxicity
• Stability

7
Chemical Changes

• Any changes made to the chemical property of a
  substance is a chemical change
• A chemical change maybe difficult or impossible
  to reverse.
• An example is burning paper. Once the paper is
  burned it can not be turned back into paper.