Physical vs. Chemical

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Physical vs. Chemical
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• Physical Property A Feature of a material that
  can be observed or measured without changing the
  composition of the material
• Ex color

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Types of Physical Properties

1. Viscosity resistance to flow (thick or thin
   fluid)
2. Conductivity how well a material conducts heat
   or electricity

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Types of Physical Properties

• 3. Malleability ability of a solid to be
  hammered without shattering
• Most metals
• 4. Hardness Diamond is hardest known material

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Types of Physical Properties

• 5. Melting point temp. that a substance changes
  from solid to liquid
• 6. Boiling point temp. that a substance changes
  from liquid to gas
• 7. Density mass/Volume

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Types of Physical Properties

• 8. Solubility the ability of a substance to
  dissolve in another substance.

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Separating mixtures

• Filtration separates mixtures containing
  different sizes of particles
• Distillation process that separates liquid based
  on differences in boiling points

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• Chemical Property Feature of a substance when
  measured or observed changes the composition of
  the substance
• Flammability ability to burn in oxygen
• Reactivity how easily a substance combines
  chemically with another substance

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• Physical Change change that doesnt change the
  identity or composition of the substance
• substance remains the same
• Ex Cutting, melting, boiling, dissolving,
  evaporating

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• Chemical change Change that changes the
  composition or identity of the Substance
• Substance no longer the same
• Ex any chemical reaction

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4 Indicators of a chemical Change

• 1. Change in color
• 2. Production of a gas
• 3. Formation of a precipitate solid that
  separates from a solution and doesnt dissolve
• 4. Production of heat or light