Understanding Chemical Reactions Physical Science Chapter 10.1 Part 1

Chemical changes rearrange chemical bonds Versus physical changes Change one or more substances into different substances Using chemical changes To make new substances Recognizing chemical changes Bubbles Temperature change Color change Precipitate

Your Turn What is the indication of a chemical reaction in: Glow stick Toe warmer Alka Seltzer Rust

Products and reactants Products on right side Reactants on left side Products may change phase in a reaction Liquid + liquid may not produce a liquid Start by counting the atoms in the products Chemical reactions to not create or destroy matter All atoms in the reactants must be identified in the produce

The products of the reaction Figuring out the products Chemical reactions rearrange atoms from the reactants to make the product No new atoms are created!

Chemical Equations Understanding a chemical equation Conservation of mass Demonstrating conservation of mass

Your Turn Partner 1: Say one thing a chemical equation tells you Partner 2: Add to their statement Partner 1: Can you add anything to that?

Activity Names of compounds worksheet – due at end of class