The definition of an isotope is illustrated using the three isotopes of carbon. The three isotopes of hydrogen are discussed as exceptions.

In this animated object, learners examine how gas volume varies directly with absolute temperature (K at constant pressure). An example of a sample of gas at two conditions of volume and temperature is used to illustrate the law.

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.

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, the learner examines the basic terms used in division. A quiz completes the activity.

Learners use basic math skills in a workplace situation.

In this interactive object, students view an animated depiction of Class 1 levers. A matching quiz completes the activity.

Students read an explanation of the values used for arterial blood gas analysis.

Students read about how acid/base balance affects a person's health. This activity includes animation.

Lesson 1 ( This game is build to practice your understanding of the first 14 letters of the Arabic Alphabet. Choose the right answer of the question to move forward to the end!

Enzymes

This game will test your knowledge of Computer Lab rule. Please select the correct answer for each question. Each correct answer will give you a swing at the baseball.

Order basic phrases