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Properties of Matter. How Do we Classify Matter?. Physical . Chemical. Can be determined without in any way changing its identity May be extensive or intensive . Extensive: Depends upon how much of a particular sample you have on hand. Ex: mass, weight, volume

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how do we classify matter
How Do we Classify Matter?

Physical

Chemical

  • Can be determined without in any way changing its identity
  • May be extensive or intensive .
  • Extensive: Depends upon how much of a particular sample you have on hand. Ex: mass, weight, volume
  • Intensive: Does not depend on the size of a sample. Ex: Color, odor, luster
  • Can be determined by its ability to be changed into a new and different substance. Ex: Ability to burn, ability to react with air
sort the following into physical extensive or intensive or chemical property
Sort the following into Physical (extensive or intensive) or Chemical property
  • Combustibility
  • Mass
  • Malleability
  • Melting point
  • Solubility
  • Conductivity
  • Ductility
  • Ability to rust
  • Ductility
  • Boiling point
  • Abiltity to tarnish
  • Denisty
  • Flammability
check your answers
Check your answers:

Physical

Chemistry

  • Mass (extensive)
  • Malleability (intensive)
  • Melting point (intensive)
  • Solubility (intensive)
  • Ductility (intensive)
  • Boiling point (intensive)
  • Density (intensive)
  • Combustibility
  • Ability to rust
  • Ability to tarnish
  • Flammability
density
Density
  • Intensive physical property
  • Quantity of matter in a given volume
  • Density=mass/volume
  • D=m/v
  • The density of a solid or liquid is expressed in grams/milliliter (g/ml)
  • The density of a gas is expressed in grams/liter (g/l)
  • Changes in temperature and pressure will affect the density of a gas more than a liquid , more than a solid. (gas laws)
what is the density of 12 00 ml of sulfuric acid with a mass of 22 08 grams
What is the density of 12.00 ml of sulfuric acid with a mass of 22.08 grams?
  • Solution:
  • D=m/v
  • D= 22.08 g/12.00 ml
  • D= 1.840 g/ml
slide7
A sample of marble has a mass of 41.2 . It’s density is 2.56 grams/cubic centimeter. What is the volume?
  • Solution:
  • D=m/v
  • 2.56 g/cc=41.2g/V
  • V= 41.2/2.56
  • V= 16.1 ml
slide8
Charcoal has a density of 0.40 grams/ cubic centimeter. Calculate the mass of the sample with a volume of 212.8 cubic centimeters.
  • Solution:
  • D=m/v
  • M=D x V
  • M= .40 g/cc x 212.8 cc
  • M= 85 grams
specific gravity
Specific gravity
  • The ratio of density of a substance to that of a standard (usually water)
  • Specific gravity= D substance (g/ml)/D water (g/ml)
  • Specific gravity= Number (no units)
  • D sample > D water (1 g/ml) the sample sinks

D sample < D water (1 g/ml) he sample floats