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How are New Materials Invented? (Grade 5) Video Lessons to Explore Chemical Reactions Note: for more information about these "types" of Science Buddies resources, see Understanding Science Buddies' Resources at the bottom of this resource. For students looking for science projects, we have also included a list of independent science and science fair projects. Resources are available in the following formats:Īt the bottom of this resource, you will find a list of key vocabulary words and additional related resources for teaching chemistry. Lessons, activities, and science demonstrations below include a range of foaming, fizzing, color-changing, and transforming experiments for teaching a unit on chemical reactions. Students also learn that the law of conservation of mass applies to all reactions and means that every atom of reactant can be accounted for as either product or waste when the reaction is complete. With classroom science experiments, activities, and independent student projects, students can learn about types of chemical reactions, including composition (also called synthesis or combination), decomposition, single replacement, double replacement, and combustion, and ways that the rate of a reaction can be sped up or slowed down. When teaching about chemical reactions, educators show chemical reactions in action and, when possible, let students get hands-on exploring reactions. A chemical reaction occurs when two or more substances (reactants) are mixed together and result in one or more new substances (products).