Open Educational Resources | Pao Yue-kong Library, The Hong Kong Polytechnic University

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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

Others

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

Others

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

Others

Gas Volume vs. Pressure (Boyle's Law)

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

Video

Types of Elements in the Periodic Table and Their Properties (Screencast)

In this screencast, we review the positions of metals, metalloids, and nonmetals in the Periodic Table and the general characteristics of each.

Subjects:: Chemistry
Keywords:: Periodic table of the elements Chemical elements
Resource Type:: Video

Video

Shapes of Simple Molecules - Part 1 (Screencast)

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.

Subjects:: Chemistry
Keywords:: Molecules
Resource Type:: Video

Others

The Limiting Reagent in Chemical Reactions

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

Others

The Mole and Avogadro's Number

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

Others

Chemical Formulas

Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.

Subjects:: Chemistry
Keywords:: Chemistry -- Mathematics Chemical structure
Resource Type:: Others

Others

Phase Transitions

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

Others

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

Others

Naming Compounds Containing Polyatomic Ions

Learners examine a table of common polyatomic ions. Eight examples are provided for practice.

Subjects:: Chemistry
Keywords:: Chemical processes Chemical reactions
Resource Type:: Others

Others

Phase Diagrams

Learners examine phase diagrams that show the phases of solid, liquid, and gas as well as the triple point and critical point.

Subjects:: Chemistry
Keywords:: Phase diagrams
Resource Type:: Others

Others

Vapor Pressure

Vapor pressure is the pressure exerted by molecules in the gas phase in equilibrium with a liquid or a solid. Two examples are used to illustrate vapor pressure: the drying of clothes and the evaporation of ice.

Subjects:: Chemistry
Keywords:: Vapor pressure
Resource Type:: Others

Video

Acid-Base Reactions (Screencast)

Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.

Subjects:: Chemistry
Keywords:: Acids Chemical reactions Bases (Chemistry)
Resource Type:: Video

Others

Oxidation-Reduction Reactions

Learners examine the meaning of oxidation, reduction, and half-reaction, and watch a film showing the deposition of copper metal from the reduction of copper (II) ion by aluminum. A brief quiz completes the activity.

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

Others

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

Others

Calculation of Atomic Weight from Isotopic Composition

Learners examine the method for calculating the atomic weight of copper from the natural percent composition of each of its two isotopes.

Subjects:: Chemistry
Keywords:: Chemical elements Atomic weights Copper
Resource Type:: Others

Video

Conversion Between Mass and Moles of an Element (Screencast)

Atomic weights are used to convert the mass of a sample into the number of moles of the element in the sample and vice versa. Four examples are provided for practice.

Subjects:: Chemistry
Keywords:: Mole (Chemistry) Chemical elements Atomic weights
Resource Type:: Video

Others

Precipitation Reactions

In this interactive and animated object, learners use solubility rules to predict when an insoluble ionic compound will precipitate in a double replacement reaction. Step-by-step examples are given.

Subjects:: Chemistry
Keywords:: Chemical reactions Solution (Chemistry)
Resource Type:: Others

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Naming Binary Ionic Compounds Containing Fixed Oxidation State Cations

Lewis Dot Structures of Covalent Compounds

Intermolecular Forces

Gas Volume vs. Pressure (Boyle's Law)

Types of Elements in the Periodic Table and Their Properties (Screencast)

Shapes of Simple Molecules - Part 1 (Screencast)

The Limiting Reagent in Chemical Reactions

The Mole and Avogadro's Number

Chemical Formulas

Phase Transitions

Mole Ratios in Chemical Equations

Naming Compounds Containing Polyatomic Ions

Phase Diagrams

Vapor Pressure

Acid-Base Reactions (Screencast)

Oxidation-Reduction Reactions

Measuring Gas Pressure

Calculation of Atomic Weight from Isotopic Composition

Conversion Between Mass and Moles of an Element (Screencast)

Precipitation Reactions

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