Search Constraints

Number of results to display per page
Results for: Creator / Instructor Douglass, Miriam Remove constraint Creator / Instructor: Douglass, Miriam Language English Remove constraint Language: English Resource Type Others Remove constraint Resource Type: Others

Search Results

  • Others 
    Calculating Gas Density from Standard Molar Volume

    Calculating Gas Density from Standard Molar Volume

    Learners calculate gas density from the standard molar volume and observe how the density increases with the increasing molecular weight of the gas.

    Subjects:
    Chemistry
    Keywords:
    Natural gas -- Measurement
    Resource Type:
    Others
     
  • Others 
    Gas Volume and Molar Amount

    Gas Volume and Molar Amount

    In this brief object, learners examine the direct relationship between the volume of a gas sample and the number of moles of gas. A problem is presented so students can test their knowledge of Avogadro's Law.

    Subjects:
    Chemistry
    Keywords:
    Natural gas -- Measurement
    Resource Type:
    Others
     
  • Others 
    Solubility of Ionic Compounds in Water

    Solubility of Ionic Compounds in Water

    Learners view movie clips to determine the solubility of two ionic compounds. They also examine a solubility chart and predict the solubility of compounds.

    Subjects:
    Chemistry
    Keywords:
    Chemical reactions Solubility
    Resource Type:
    Others
     
  • Others 
    The Kinetic Theory of Gases

    The Kinetic Theory of Gases

    In this animated activity, learners examine what gases are composed of and how their particles interact. They also consider several assumptions that form the basis for the Kinetic Theory of Gases.

    Subjects:
    Chemistry
    Keywords:
    Kinetic theory of gases Gas dynamics
    Resource Type:
    Others
     
  • Others 
    The Combined Gas Law

    The Combined Gas Law

    Learners combine Boyle's Law and Charles's Law to solve for the pressure, volume, and temperature of a gas sample under two sets of conditions.

    Subjects:
    Chemistry
    Keywords:
    Boyle's law Charles' law Gas laws (Physical chemistry)
    Resource Type:
    Others
     
  • Others 
    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
     
  • Others 
    Oxidation States of Ions

    Oxidation States of Ions

    Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.

    Subjects:
    Chemistry
    Keywords:
    Reduction (Chemistry) Chemical reactions Oxidation Oxidation-reduction reaction
    Resource Type:
    Others
     
  • Others 
    Standard Molar Volume

    Standard Molar Volume

    Learners observe that the volume of one mole of any gas is 22.4 L at standard temperature and pressure. An illustration shows that only the mass of the molar volume differs with the identity of the gas.

    Subjects:
    Chemistry
    Keywords:
    Gases Molecular volume
    Resource Type:
    Others
     
  • Others 
    Determining Empirical and Molecular Formulas (Screencast)

    Determining Empirical and Molecular Formulas (Screencast)

    Learners follow a four-step process to determine the empirical formula of a compound from the masses of its constituent elements. The molecular formula is determined in a fifth step using the molecular weight of the compound.

    Subjects:
    Chemistry
    Keywords:
    Molecular weights Chemistry Physical theoretical
    Resource Type:
    Others
     
  • 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
     
  • 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 
    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
     
  • 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
     
  • 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 
    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
     
  • Others 
    Calculating Formula Weight and Molecular Weight

    Calculating Formula Weight and Molecular Weight

    In this interactive object, learners calculate formula and molecular weights by working through five examples and two problems.

    Subjects:
    Chemistry
    Keywords:
    Molecular weights Atomic weights
    Resource Type:
    Others