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

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.

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.

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.

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

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

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

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

In this animated activity, learners examine the terms "half-reaction," "oxidizing agent," and "reducing agent" and follow five interactive examples to balance equations for oxidation-reduction reactions. Three problems are provided as a self-check.

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.

In this animated and interactive object, learners follow two rules to write unit conversion fractions.

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

In this interactive object, learners use the ideal gas law to solve a practice problem.

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

In this colorful, interactive object, learners examine how materials on the nanoscale compare with those on the macroscale. The focus is on the difference between macroscale and nanoscale gold in both color and melting point.

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

Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.

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.

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.

Students examine standard pressure in this interactive object.