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  • Others 
    The Solid State

    The Solid State

    In this well-illustrated object, learners examine the structures and properties of the four types of solids: molecular, metallic, ionic, and covalent network. Five interactive questions are provided.

    Subjects:
    Chemistry
    Keywords:
    Solid state chemistry
    Resource Type:
    Others
     
  • Others 
    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
     
  • Video 
    Taffy Atoms

    Taffy Atoms

    Students read brief descriptions of atoms, molecules, elements, and compounds, and complete a matching exercise that pictures these particles and molecules as pieces of taffy.

    Subjects:
    Chemistry
    Keywords:
    Chemicals Molecules Chemical elements Atoms
    Resource Type:
    Video
     
  • Others 
    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
     
  • Others 
    Oxidation Numbers

    Oxidation Numbers

    Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.

    Subjects:
    Chemistry
    Keywords:
    Reduction (Chemistry) Chemical reactions Oxidation Oxidation-reduction reaction
    Resource Type:
    Others
     
  • Others 
    A Biological Example of Water Solubility

    A Biological Example of Water Solubility

    In this animated object, students examine the role that the solubility of water plays in various biological functions.

    Subjects:
    Chemistry
    Keywords:
    Water chemistry
    Resource Type:
    Others
     
  • Video 
    Introduction to the Periodic Table (Screencast)

    Introduction to the Periodic Table (Screencast)

    In this screencast, students read about the basic organization and structure of the periodic table of elements. Students identify elements as belonging to a group, a period, or neither.

    Subjects:
    Chemistry
    Keywords:
    Periodic table of the elements Chemical elements
    Resource Type:
    Video
     
  • Others 
    Absolute Zero Temperature

    Absolute Zero Temperature

    Learners view illustrations showing the direct dependence of the volume of a gas on temperature and consider the relationship between the Kelvin and Celsius temperature scales.

    Subjects:
    Chemistry
    Keywords:
    Temperature Low temperatures
    Resource Type:
    Others
     
  • Video 
    Product Yields in Chemical Reactions (Screencast)

    Product Yields in Chemical Reactions (Screencast)

    Learners examine the meaning of theoretical yield, actual yield, and percent yield. They test their knowledge by solving two problems.

    Subjects:
    Chemistry
    Keywords:
    Chemical reactions
    Resource Type:
    Video
     
  • Video 
    Biomolecules: The Carbohydrates (Video)

    Biomolecules: The Carbohydrates (Video)

    Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.

    Subjects:
    Chemistry
    Keywords:
    Carbohydrates Biomolecules Organic compounds
    Resource Type:
    Video