Watch four demonstrations showing one or more of the following characteristics: a color change, precipitate formation, gas production, and a temperature change (either exothermic or endothermic).
Demonstration illustrating the different evidence signifying that a chemical change has occurred.
Reviews the signs that a chemical reaction has occurred.
Practice Recognizing Chemical Reactions questions
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Learn how chemical reactions change the proteins in meat during cooking, to create a delicious brown burger from raw red meat.
Find out the chemical reactions that cause glow sticks to give off light, and learn some real-world applications of glow sticks.
Find out how chemical and physical changes occur; and explore the science behind some common changes in the world around you.