Five exemplary chemistry lessons about the three states of matter complete with handouts and animations.

DENSITY is a physical property of matter, as each element and compound has a unique density associated with it. Density defined in a qualitative manner as the measure of the relative "heaviness" of objects with a constant volume. For...

Learners will work in teams to design and construct outdoor air pollution detectors from everyday items. They will then test the designs for presence of pollutants in the air and communicate their results to the class.

This lesson focuses on predicting chemical reactions using The Group 1 elements in the Periodic Table are known as the alkali metals. They include lithium, sodium and potassium, which all react vigorously with air and water. It provides...

Let this classic family of monsters guide you as you learn about energy. Interactive exercises, experiments, and demonstrations help to build knowledge and raise questions.

Includes exhaustive information and a wealth of activities pertaining to aerodynamics and the physics of flight.

PBS site offers an experiment kids can do at home to see how carbon dioxide can put out burning candles.

Interesting site with links to activities about wind and air in many forms. Browse the different activities and investigations on the properties of air on the toolbar to the left of the page.

This site from Chemicool provides a set of data tables summarizing basic chemical and physical properties of nitrogen.

A nice, easily followed summary of krypton, its uses and properties.

Lots of valuable information on nitrogen, its properties and some of its uses and compounds.

This article explains how helium is able to keep balloons afloat in the air. Compares them to how hot air balloons work. Includes a video, and some activities to try for testing the principles being discussed.

Demonstrate how heating expands air molecules by constructing a bottle fountain powered by air pressure.

An easy to do activity that investigates Bernoulli's principle. The activity is presented in lesson plan format that meets NSES standards.

Great animations showing how sound is produced.

Situated in the lush Lenggong Valley, the property includes four archaeological sites in two clusters which span close to 2 million years, one of the longest records of early man in a single locality, and the oldest outside the African...