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    Naming Binary Ionic Compounds Containing Variable Oxidation State Cations (Screencast)

    Naming Binary Ionic Compounds Containing Variable Oxidation State Cations (Screencast)

    Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.

    Subjects:
    Chemistry
    Keywords:
    Ionic structure Ions
    Resource Type:
    Others
     
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    Naming Binary Ionic Compounds Containing Fixed Oxidation State Cations

    Naming Binary Ionic Compounds Containing Fixed Oxidation State Cations

    Learners examine a table containing the names of common cations and anions.

    Subjects:
    Chemistry
    Keywords:
    Ionic structure Ions
    Resource Type:
    Others
     
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    Mole Ratios in Chemical Equations

    Mole Ratios in Chemical Equations

    Learners use the coefficients in a balanced equation to develop the mole ratios of reactants and products involved in the reaction. Five interactive examples illustrate the method, and students test their knowledge by working four problems.

    Subjects:
    Chemistry
    Keywords:
    Chemical reactions Chemical equations
    Resource Type:
    Others
     
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    Melting Point and Freezing Point

    Melting Point and Freezing Point

    Learners observe that the melting of a solid and the freezing of its liquid occur at the same temperature. The melting point is an intrinsic property and is used to identify a substance.

    Subjects:
    Chemistry
    Keywords:
    Melting points Freezing points
    Resource Type:
    Others
     
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    Measuring Gas Pressure

    Measuring Gas Pressure

    Learners convert units used to designate pressure. Units for pressure are atm, mm Hg, torr, and pascal.

    Subjects:
    Chemistry
    Keywords:
    Natural gas -- Measurement
    Resource Type:
    Others
     
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    Lewis Dot Structures of Covalent Compounds

    Lewis Dot Structures of Covalent Compounds

    In this interactive and animated object, students distribute the valence electrons in simple covalent molecules with one central atom. Six rules are followed to show the bonding and nonbonding electrons in Lewis dot structures. The process is well illustrated with eight worked examples and two interactive practice problems.

    Subjects:
    Chemistry
    Keywords:
    Chemical bonds Valence (Theoretical chemistry)
    Resource Type:
    Others
     
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    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
     
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    Ions

    Ions

    Ions are electrically charged particles obtained from an atom or from a chemically bonded group of atoms by adding or removing electrons. Eight examples illustrate the number of protons, neutrons, and electrons in positive ions (cations) and in negative ions (anions).

    Subjects:
    Chemistry
    Keywords:
    Ions
    Resource Type:
    Others
     
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    Intermolecular Forces

    Intermolecular Forces

    In this well-illustrated activity, learners examine the three types of intermolecular forces: dipole-dipole forces, London or Van der Waals forces, and the hydrogen bond. Two interactive questions are included.

    Subjects:
    Chemistry
    Keywords:
    Intermolecular forces Molecules
    Resource Type:
    Others
     
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    Ideal Gas Law

    Ideal Gas Law

    In this interactive object, learners use the ideal gas law to solve a practice problem.

    Subjects:
    Chemistry
    Keywords:
    Gas laws (Physical chemistry)
    Resource Type:
    Others