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- Grade Range
- 5th
- Rating
Students, in groups, complete two activities in which various substances are combined, resulting in a very different substances. They discuss reactants and products and chemical reactions. Full Review »
- Grade Range
- 5th
- Rating
Students watch a demonstration in which a balloon is inflated using the gas created by combining vinegar and baking soda. Then, in groups, they combine various assigned substances and watch and record the results. Full Review »
- Grade Range
- 11th - 12th
- Rating
Students experiment to determine the effect of the frequency of collisions between atoms or ions of the reactants. They investigate the rate at which aluminum replaces hydrogen from a solution of hydrochloric acid. Full Review »
- Grade Range
- 9th - 11th
- Rating
Students work in groups to define chemistry vocabulary including the terms reactants, products, exothermic and endothermic. They then combine the group definitions to arrive at a consensus definition for the class. Students also listen to a lecture, compose journal entries and discuss textbook readings. Full Review »
- Grade Range
- Higher Ed
- Rating
Students recognize epoxy glue formation as two part polymerization (usually the curing agents act as co-monomers). They monitor the reaction by the changes in viscosity of the reacting mass, the temperature rise and fall, and the appearance of product peaks in the IR spectrum with the concurrent disappearance of reactant peaks. Pupils have a hands-on experience with a polymerization process with materials available from the hardware store. Full Review »
- Grade Range
- 10th - 12th
- Rating
Students conduct a series of experiments in which they explore chemical reactions. They detect chemical changes by observing how physical properties change when two different chemicals are combined. They list and describe the reactants and products and the chemical change that has occured in five different cases. Full Review »
- Grade Range
- 10th - 12th
- Rating
Students predict how a chemical reaction rate will be quantitatively affected by changes in concentration. They perform a lab where they will vary the number of collisions between reactants and measure this effect on reaction rate. Full Review »
- Grade Range
- 11th - 12th
- Rating
Students conduct an experiment in which they react sodium bicarbonate with hydrochloric acid to determine the molar ration between the two reactants. Students must write correct formula and a balanced chemical equation and explain how it relates to their hypothesis. Full Review »
- Grade Range
- 7th
- Rating
Students distinguish between physical and chemical changes in both natural and technological settings. They identify the reactants and products for a given chemical reaction. they then write simple chemical equations given the reactants and products. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students list three factors that can affect the rate of a reaction. They review chemical reactions, reactants, products, types of reactions, and balancing equations. Students discuss how fast, or slow, they happen. They work as a group to calculate the surface area of their block. Full Review »
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