In this animated object, learners examine synthesis, decomposition, exchange, and reversible reactions.

In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.

In this animated and interactive object, learners examine kinetic and potential energy as well as the first law of thermodynamics and the flow of energy between a system and its surroundings. Students also answer questions about exothermic and endothermic reactions

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).

In this interactive object, learners examine the properties of equality and use those properties to solve simple 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.

In this screencast we are introduced to the lab equipment used to contain and dispense chemicals.

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

This learning activity describes the physical properties that affect the inductance, in henries, of an inductor.

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.

In this screencast, learners examine the kinds of physical and chemical changes that occur in substances.

In this interactive lesson, students examine the quantitative relationship between chemicals in a balanced mathematical equation.

Learners study the properties of a rectangular solid and use geometric formulas to find volume and surface area.

Learners study the properties of a right circular cone and use geometric formulas to find volume and surface area.

In this interactive object, students examine a type of chemical bond known as the "hydrogen bond."

In this animated and interactive object, learners examine the properties of liquids, solids, and gases.

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

Learners examine the properties that determine capacitance.

Learners study the properties of a right circular cylinder and use geometric formulas to find volume and surface area.

In this animated lesson, learners read about the disulfide bond, the second strongest chemical bond in the hair. This bond can only be altered by chemicals.