Learners examine how melting, vaporization, and sublimation require energy input while freezing and condensation release energy.

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.

Learners examine how five or six groups of electrons around a central atom cause the shape of the molecule to be trigonal bipyramidal, seesaw, T-shaped, linear, octahedral, square pyramidal, or square planar. Seven examples and three interactive questions are provided in this animated activity.

Students examine atomic structure and the octet rule.

In this animated object, learners examine the structure and function of intracellular and extracellular fluid. They also read about the most common electrolytes in the body and complete a matching exercise to test their knowledge.

Students listen to three telephone messages and enter their evaluation of each one. They then read a list of guidelines for leaving effective messages.

In this learning activity you'll identify the various parts of a bar graph, read and interpret its data, and calculate the data to solve various application problems.

In this learning activity you'll establish your budget by determining your earnings, expenses, and goals.

In this learning activity you'll explore how units in the metric system are related to each other and practice locating measurements on a metric line.

AL-QURAN TAHUN 1

Review important vocabulary relating to the properties of matter.

Parts of the Mass

math terms and Definitions