Learners read about lab equipment and basic safety measures. In a quiz, they view photos and determine if the lab technicians pictured are using safe practices.

Students use algebra to rearrange formulas and solve for the missing volume, density, or mass quantity.

In this animated object, learners examine the chemistry behind table salt.

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

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

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.

Students practice identifying common elements from the periodic table by name or symbol.

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.

Learners identify combination, decomposition, displacement, and combustion types of redox reactions. They also watch a video clip that demonstrates the reaction of sodium and water.

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

Learners examine the method used to calculate the mass percent of an element in a compound. Three examples and one problem illustrate the method.

Learners examine how the boiling point increases with increasing pressure. An example from industry is given.

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.

Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.

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

In this animated object, students are introduced to moles as a measurement.

Learners examine how chemists use moles to "count" atoms by weight. Examples are given.

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.

Students solve a molarity problem in a drag and drop exercise.

Learners complete an exercise to match chemical formulas with the names of binary compounds, tertiary compounds, and ions.