The ingredients in Alka-Seltzer tablets undergo a chemical reaction that produces carbon dioxide gas as soon as the tablets hit water. Do you think you can cause the tablets to produce gas faster by breaking them into smaller pieces...

In this 21-day unit, students are introduced to the anchoring phenomenon-a flameless heater in a Meal, Ready-to-Eat (MRE) that provides hot food to people by just adding water. They complete investigations to collect evidence to support...

After observing a demonstration of a chemical reaction between a burning candle and the oxygen in the air, students use atom model cut-outs to model the reaction and see that all the atoms in the reactants show up in the products.

Understand chemical reactions by learning about enthalpy and entropy.

Learners will participate in a guided inquiry activity using manipulatives to learn how to balance chemical reactions. This activity was developed in cooperation with Michelle Holdbrooks at Thompson High School...

Students analyze the chemical equation for the reaction between vinegar and baking soda. They observe that the gas produced in the reaction is also part of the products of the written chemical equation.

Watch molecules collide with enough energy that bonds break and form new bonds in a chemical reaction.

This tutorial provides an explanation of reaction rates in chemical reactions with examples and sample problems.

This video is a professional development resource that explores student misconceptions about atoms, molecules, and chemical reactions. It also gives some pedagogical approaches for approaching these subjects. [10:12]

[Free Registration/Login may be required to access all resource tools.] In this module, students will practice expressing the rates of chemical reactions, and they will also describe the collision theory as it relates to chemical reactions.

Students observe and investigate how a catalyst increases the rate of a chemical reaction while not becoming part of the products of the reaction.

A good resource on chemical reactions, organized by topic: "Examples of chemical changes," "Chemical equations of chemical reactions," "Balancing equations," "Synthesis reactions," "Decomposition reactions," "Single replacement...

Students will be able to describe what happens in a chemical reaction, and identify types of chemical reactions.

What is a chemical reaction? Learn about chemical equations, the four types of chemical reactions, and other fun facts.

Observe reactions that produce gases in this lab activity! Students observe chemical changes as they evaluate the amount of gas produced. This lab activity includes both student and teacher instruction sheets.

This lesson focuses on chemical reactions including what they are and an explanation of each part of a chemical equation.

There are a variety of rates scientists measure when studying chemical reactions. This resource highlights five rates often measured.

A site discussing chemical reactions in chemistry including reaction rate, types of reactions, reagents, reactants, catalysts, and inhibitors.

Young scholars experiment to see if the temperature of two clear colorless solutions affects how fast they react.

This is a straightforward, fun project to measure the rate of the chemical reaction that occurs when Alka-Seltzer tablets are plopped into water. You'll track the volume of carbon dioxide gas produced at regular intervals after the...

Use an Alka-Seltzer to find out how size of a particle affects the speed of a chemical reaction. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by a section on...

By using Alka-Seltzer and different temperatures of water, you can determine the effect of the water temperature on the chemical reaction of the tablet. The Science Buddies project ideas are set up consistently beginning with an...

[Free Registration/Login may be required to access all resource tools.] Students describe how the elementary steps of a chemical reaction combine to produce the overall reaction mechanism, and identify intermediates and catalysts when...

In this science fair project, experiment with the role temperature plays in the rate at which UV beads lose their color. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction,...