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Douglass, Miriam
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McClinton, Martin
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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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Others
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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Others
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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Others
Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.
- Subjects:
- Chemistry
- Keywords:
- Boyle's law Gas laws (Physical chemistry)
- Resource Type:
- Others
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Video
In this animated and interactive object, learners observe how two, three, or four groups of electrons around the central atom cause the shape of the molecule to be linear, trigonal planar, bent, tetrahedral, or pyramidal. Seven examples and eight interactive questions are provided.
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Others
In this interactive object, learners determine the limiting reagent and the excess reagent in chemical reactions. Learners test their knowledge by solving three problems.
- Subjects:
- Chemistry
- Keywords:
- Chemical processes Chemical reactions
- Resource Type:
- Others
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Others
Learners examine how chemists use moles to "count" atoms by weight. Examples are given.
- Subjects:
- Chemistry
- Keywords:
- Mole (Chemistry) Chemical elements Avogadro's law
- Resource Type:
- Others
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Others
Learners examine how melting, vaporization, and sublimation require energy input while freezing and condensation release energy.
- Subjects:
- Chemistry
- Keywords:
- Thermodynamics Phase transformations (Statistical physics)
- Resource Type:
- Others
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Others
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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Others
Learners examine a table of common polyatomic ions. Eight examples are provided for practice.
- Subjects:
- Chemistry
- Keywords:
- Chemical processes Chemical reactions
- Resource Type:
- Others