Curated OER
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...
Curated OER
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...
Curated OER
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 worksheet is neatly formatted,...
Curated OER
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...
Curated OER
Instantaneous Reaction Rate
In this instantaneous reaction rate worksheet, learners 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...
Curated OER
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...
Curated OER
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.
Curated OER
Collisions Drive Reactions
In this reactions worksheet, students determine what must take place in order for a reaction to occur. Students complete 6 short answer questions.
Curated OER
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.
Curated OER
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...
Curated OER
Kinetics Homework Problem Set
In this chemistry worksheet, learners 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...
Curated OER
Reaction Rates
Students 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 form...
Science Buddies
Science Buddies: Investigate the Kinetics of the Amazing Iodine Clock Reaction
In this science fair project, investigate the chemical kinetics of the famous iodine clock reaction. This classic experiment requires about a week to complete.
Science Buddies
Science Buddies: Bring on the Heat! Investigating Exothermic Reaction Rates
Have you ever pulled a muscle or just been sore after a long day of work or exercise? Hot showers are great, but maybe you've used the more convenient heat packs. Heat packs, which you can buy at grocery or drug stores to soothe aching...
American Chemical Society
Middle School Chemistry: Chapter 6: Chemical Change
Twelve interactive chemistry lessons about chemical changes complete with handouts and animations.
Concord Consortium
The Molecular Workbench Database: Chemical Reactions and Stoichiometry
This simulation helps students investigate the basics of chemical equations. Students will review stoichiometry and what effects their reaction rates.
Concord Consortium
Concord Consortium: Stem Resources: Chemical Reactions
This web-based activity gives students an opportunity to write chemical reactions, balance chemical equations, and explain what is happening during a given chemical reaction. Also addressed is the effects of concentration and temperature...
Davidson College
Davidson College: Chemical Kinetics: Integrated Rate Laws
Explains the integrated rate laws for zero-, first-, and second-order reactions. Students then try a virtual stopped-flow experiment to find the rate law and the rate constant for a chemical reaction. Requires Java.
Science Buddies
Science Buddies: Got Iron? Measure the Concentration of Iron in Water
Iron is an important mineral essential for good health. Iron deficiency can be a problem. In this science fair project, use a simple iron test kit to measure the concentration of iron in water. This experiement is explained clearly and...
TED Talks
Ted: Ted Ed: How to Speed Up Chemical Reactions (And Get a Date)
This video explores by analogy what factors speed up reaction rates in chemical reactions. [4:56] Includes a brief quiz and a list of additional resources to explore.
MadSci Network
Msn: What Regulates the Speed of Hydrogen Fusion?
From the Mad Scientist Network web site. Using a question and answer format, this page describes the various types of fusion processes and the physical requirements needed for their initiation and sustenance. Factors affecting the rates...
Texas Instruments
Texas Instruments: Designing a Reaction Rate Experiment
In this activity, students will design, conduct, and report the outcome of an experiment in which they investigate some factor that affects the rate of reaction between baking soda and vinegar. The dynamic nature of the reaction, coupled...
CK-12 Foundation
Ck 12: Physical Science: Chemical Reaction Rate
[Free Registration/Login may be required to access all resource tools.] Definition of chemical reaction rate and factors that influence it.
Sophia Learning
Sophia: Limiting Reactant Percent Yield
A video lesson which explains how to determine the percent yield of a substance using the theoretical yield of the chemical reaction. [5:13]