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Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
Applied Chapter 1.2 : Describing Matter
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Applied Chapter 1.2 : Describing Matter

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  • 1. Describing Matter
    Chapter 1.2
  • 2. Objectives
    Distinguish between different characteristics of matter, including mass, volume, and weight.
    Identify and us SI unit in measurements and calculations.
    Set up conversion factors, and use them in calculations.
    Identify and describe physical properties, including density.
    Identify chemical properties.
  • 3. Matter has Mass and Volume
    Matter
    Anything that has mass and volume
    Volume
    Amount of space an object takes up
    Use graduated cylinder or meter stick
    Measured in mL, cm3, L
    Mass
    Amount of matter in an object
    Use triple beam balance or electronic scale
    Measure in grams, mg, kg
    Weight
    Force produced by gravity acting on object
  • 4. Units of Measurement
    Quantity
    Magnitude, size, or amount
    5 3500 0.00045
    Unit
    Standard of measurement
    Liters, Grams, Seconds
    SI Units
    Standard International Units
  • 5. SI Base Units
    Quantity Symbol Unit Abbrev.
    Length l meter m
    Mass m kilogram kg
    Time t second s
    Volume v Liter L
  • 6. SI Prefixes
    Prefix Abbrev. Exponent Meaning
    Kilo k 103 1000
    Hecto h 102 100
    Dekada 10 10
    Base 100 1
    Deci d 10-1 1/10
    Centi c 10-2 1/100
    Milli m 10-3 1/1000
  • 7. Converting Units
    Conversion Factor
    Ratio that is derived from the equation of two different units and that can be used to convert from one unit to the other.
    Example of equalities
    1 kg = 1000 g or
    1 m = 100 cm or
    1 kg
    1000 g
    1000 g
    1 kg
    1 m
    100 cm
    100 cm
    1 m
  • 8. Using conversion Factors
    Identify quantity and unit given
    Use correct equality
    Set up so given unit cancels out
    Multiply by conversion factor
    Mass given
    Mass
    Wanted
    1000 g
    4.5 kg
    =
    4500 g
    1 kg
    Conversion Factor
  • 9. Practice
    357 mL = ______ L
    25 kg = ______ mg
    35000 cm3 = ______ L
    2.46 L = ______ cm3
    Which quantity is larger?
    2400 cm or 2 m
    3 L or 3 mL
    17 g or 1.7 kg
  • 10. Derived Units
    Requires more than one measurement
    Examples:
    Speed - distance and time, miles/hour or m/s
    Area – length x width, m2
    Volume – L x W x H, cm3
    1 L = 1000 mL = 1000 cm3
  • 11. Properties of Matter
    Physical Properties
    Property that can be changed without changing the identity of the substance.
    Example: color, texture, melting point, smell, density
    Density:
    Ratio of mass to volume - g/cm3 or g/mL
    Density = Mass or D = M
    Calculate the density of a piece of metal if its mass is 201.0 g and it volume is 18.9 cm3
    Volume
    V
  • 12. Chemical Properties
    Describes a substance’s ability to participate in chemical reactions.
    Examples
    Rusting
    Not rusting– silver and gold
    +
    table salt
    sodium metal
    chlorine gas
    Sodium Chlorine Sodium Chloride

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