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Catalysts

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.

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Cellular Respiration

Cellular respiration is the process by which our bodies convert glucose from food into energy in the form of ATP (adenosine triphosphate). Start by exploring the ATP molecule in 3D, then use molecular models to take a step-by-step tour of the chemical reactants and products in the complex biological processes of glycolysis, the Krebs cycle, […]

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Changes in the Environment

This activity places the control of the environment under the student’s control. A field starts off with a uniform light level, and thus capable of growing plants with medium-sized leaves. Students can alter the environment by “growing” a chain of mountains through the field. Students are challenged to grow the mountains to their maximum height […]

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Chemical Bonds

Electrons are key to forming the two broad categories of chemical bonds: covalent and ionic. Atoms, which have a nucleus surrounded by electrons, are represented in several different ways. In the Chemical Bonds activity, students explore the different kinds of chemical bonds that can form, ranging from non-polar covalent to ionic. In the model depicted […]

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Chemical Reactions and Stoichiometry

In this activity, students explore reactions in which chemical bonds are formed and broken. Students experiment with changing the temperature and the concentration of the atoms in order to see how these affect reaction rates. They also learn how to communicate what happens during a chemical reaction by writing the ratios of reactants and products, […]

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Clouds and the Water Cycle

Investigate how and why clouds form, and what different kinds of clouds there are by following a story guiding you through a series of interactive activities. Learn about the water cycle and how clouds play a part in it, as well as how to create your own cloud in a bottle. Pre- and post-tests encourage […]

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Competition

In this activity, you will use a model to study the effect of a consumer (rabbits) on two species of producers (grasses and weeds).

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