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2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire  year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
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Identifying and Explaining Reactions
Introduce high schoolers to chemical reactions with this series of activities. In a little over an hour, scientists observe four gas-producing reactions: the combination of hydrochloric acid and sodium hydroxide, placing pasta in...
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Rate and Concentration
Experimental data for a chemical reaction is available in a table. Chemistry cohorts use critical thinking skills to analyze the data and answer questions about reaction rates and reaction order. This activity is neatly formatted,...
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Physical and Chemical Reactions - Factors Which Affect Reaction Rate
A total of five experiments lead chemistry pros to understand the difference between physical and chemical change. They also experiment with exothermic reaction factors that affect rate of reaction. The procedures are not written in the...
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Instantaneous Reaction Rate
In this instantaneous reaction rate worksheet, students draw an energy diagram for a given reaction, they determine the rate law for a reaction, they determine a rate constant for a reaction and they determine the reaction rate for a...
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Exothermic vs. Endothermic
The PowerPoint opens with video footage of the decomposition of nitrogen triiodide and then explains it with diagrams. Graphs of exothermic and endothermic reactions are exhibited, as well as one for the effect of a catalyst on reaction...
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The Relationship between Temperature and Reaction Rate
In this temperature and reaction rate worksheet, students complete a graphic organizer to show the relationship between temperature increasing and the rate of a reaction and temperature decreasing and the rate of a reaction.
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Collisions Drive Reactions
In this reactions learning exercise, learners determine what must take place in order for a reaction to occur. Students complete 6 short answer questions.
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Kinetics and Equilibrium
In this kinetics and equilibrium worksheet, students use the diagram to answer the questions as it relates to endothermic or exothermic reactions. Students indicate the result in the reaction rate as speeding up or slowing down.
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Reaction Kinetics
In this chemical reactions worksheet, students determine the reaction rate for various reactions, write balanced equations, create graphs showing the reaction over time, and calculate the activation energy and potential energy. This...
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Kinetics Homework Problem Set
In this chemistry worksheet, students determine the reaction rate as specified for each in seconds. Then they determine the activation energy for the reaction and preexponential factor as stated. Students also determine the concentration...
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Reaction Rates
Young scholars work in groups of 4-6 for the experiment/activity part of this exercise. They base their explanation on what they observed. Students observe how substances react chemically in characteristic ways with other substances to...