This activiy with cartesian divers introduces the gas laws in a high school chemisry class.

There are two types of catalysis reactions: homogeneous and heterogeneous. In a homogeneous reaction, the catalyst is in the same phase as the reactants. In a heterogeneous reaction, the catalyst is in a different phase from the reactants. This activity addresses homogeneous catalysis.

This interactive resource adapted from the National Park Service presents the key concepts of cave and karst systems, including how and where they form, different types, and various cave environments.

In this interactive activity from NOVA, discover how centripetal force can affect you when riding in a car or flying at high speeds in a fighter jet.

This video segment explains centripetal force and illustrates how roller coasters rely on it to give you a thrilling ride.

This activity is a hands-on activity to help students learn the behavior of gas particles.

This investigation will have students testing how heating and cooling can change the state of matter. They will test a variety of materials determine whether a change takes place through heating/cooling.

This video segment adapted from NASA describes the basic characteristics of our star, the Sun.

This activity is a 2 part lab activity where students record properties of various bars of soap, and make models of molecules as they are cooled or heated. Students develop a new experiment changing one variable.

In this video segment adapted from NOVA, scientists are on the hunt for tornadoes. Using Doppler radar, they gather data in the hopes of solving the mystery of how tornadoes form.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to electrochemistry. Several of the topics included at this site are chemistry and electricity, electroneutrality, potential differences at interfaces, cell description conventions, and more.

Acting as part of an overview on quantum theory, this section of the site deals with questions related to electrons, such as "If the electron cannot be localized, can it be moving?" and "Why does the electron not fall into the nucleus?"

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the elements. Topics covered in the discussion include Primordial Chemistry, Stellar nucleosynthesis, Hydrogen burning, and more.

With an overview of topics related to chemical energetics, this site provides a foundation to a study of thermodynamics and its relation to energy, heat, and work.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the Earth, and specifically the Earth's crust. Other topics covered include chemistry of the crust, composition of rock, distribution of elements, and more.

As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to entropy. Other topics covered include how thermal energy is stored in molecules, quantum states, microstates and energy spreading, and more.

Here you can find all kinds of helpful information about chemistry. Learn about reactions, elements, atoms, matter, or biochemistry. Downloads and activities are also included.

Chem4Kids! looks at careers available in the large field of chemistry. Here you can explore the career of a doctor, pharmacist or pharmacologist, university researcher, forensics expert, or hazardous materials expert.

This site provides a general overview of thermochemistry, the division of chemistry that deals with temperature in chemical reactions. Content explores what heat and cold really are, the heat and energy around you, and a bit about Lord Kelvin.

This activity is a lab where students make qualitative and quantitative observation on a chemical change. They will see that gases have mass in accordance with the conservation of matter.