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  • Others 
    Macroscale vs. Nanoscale

    Macroscale vs. Nanoscale

    In this colorful, interactive object, learners examine how materials on the nanoscale compare with those on the macroscale. The focus is on the difference between macroscale and nanoscale gold in both color and melting point.

    Subjects:
    Chemistry
    Keywords:
    Nanoscience
    Resource Type:
    Others
     
  • Others 
    Atomic Weight

    Atomic Weight

    Learners read the definition of atomic weight and obtain the weights of elements by viewing the Periodic Table and charts that list atomic weights by name or symbol.

    Subjects:
    Chemistry
    Keywords:
    Periodic table of the elements Chemical elements Atomic weights
    Resource Type:
    Others
     
  • Video 
    Percent Composition of Compounds (Screencast)

    Percent Composition of Compounds (Screencast)

    Learners examine the method used to calculate the mass percent of an element in a compound. Three examples and one problem illustrate the method.

    Subjects:
    Chemistry
    Keywords:
    Chemistry -- Notation Chemical elements
    Resource Type:
    Video
     
  • Others 
    How Pressure Changes Boiling Temperature

    How Pressure Changes Boiling Temperature

    Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.

    Subjects:
    Chemistry
    Keywords:
    Heat -- Transmission Pressure Boiling-points
    Resource Type:
    Others
     
  • Others 
    Isotopes

    Isotopes

    The definition of an isotope is illustrated using the three isotopes of carbon. The three isotopes of hydrogen are discussed as exceptions.

    Subjects:
    Chemistry
    Keywords:
    Isotopes
    Resource Type:
    Others
     
  • Others 
    Charles's Law

    Charles's Law

    Learners view an animation showing how the volume of a given quantity of gas varies directly with its temperature.

    Subjects:
    Chemistry
    Keywords:
    Charles' law Gas laws (Physical chemistry) Gase -- Thermal properties
    Resource Type:
    Others
     
  • Others 
    Unit Conversions

    Unit Conversions

    In this animated and interactive object, learners follow two rules to write unit conversion fractions.

    Keywords:
    Metric system Units of measurement
    Resource Type:
    Others
     
  • Others 
    Heat of Fusion and Heat of Vaporization

    Heat of Fusion and Heat of Vaporization

    Learners examine graphs and read that the heat of fusion is the heat energy absorbed by one mole of solid as it is converted to liquid, while the heat of vaporization is the heat energy absorbed by one mole of liquid as it is converted to gas.

    Subjects:
    Chemistry
    Keywords:
    Heat
    Resource Type:
    Others
     
  • Others 
    Boiling Point of a Liquid

    Boiling Point of a Liquid

    Learners examine how the boiling point increases with increasing pressure. An example from industry is given.

    Subjects:
    Chemistry
    Keywords:
    Boiling-points
    Resource Type:
    Others
     
  • Others 
    Gas Volume vs. Temperature (Charles's Law)

    Gas Volume vs. Temperature (Charles's Law)

    In this animated object, learners examine how gas volume varies directly with absolute temperature (K at constant pressure). An example of a sample of gas at two conditions of volume and temperature is used to illustrate the law.

    Subjects:
    Chemistry
    Keywords:
    Charles' law Gas laws (Physical chemistry) Gase -- Thermal properties
    Resource Type:
    Others