Changes in Matter

1
Changes in Matter

• Is it chemical or physical?

2
Properties

• Physical Properties
• Can be observed or measured without changing the
  identity
• Observed with senses
• Able to be measured
• Includes density, melting point, boiling point
• Conductivity
• Malleability
• Ductility
• Solubility

• Chemical Properties
• gives the material the ability to change into
  different material
• Reactivity (reacts)
• Oxidation
• Flammability (combustion)

3
Evidence of Physical Change

• Bending, breaking, smashing, freezing, melting,
  evaporating, crushing, cutting, tearing, sanding,
  grinding, mixing, separating, dissolving...any
  kind of change that does not change the make-up
  of the material and could potentially be reversed!

4
Evidence of Chemical Change

• When one or more substances are changed into
  entirely new substances cannot be reversed
• Fizzing, burning or combustion, corrosion,
  production of odor, heat, cold, light, rust,
  solids, smoke, decomposition

5
Chemical or Physical?