Describe how atoms cannot be created or destroyed in a chemical reaction Balance symbol equations Outcomes State a definition of a chemical reaction in terms of reactants and products Key Words Reaction Bond Covalent Ionic Starter Write down the reactants and products of the following equations: Sodium + chlorine  sodium chloride Hydrogen + oxygen  water Write down the balanced chemical equations

Describe how atoms cannot be created or destroyed in a chemical reaction Balance symbol equations Outcomes State a definition of a chemical reaction in terms of reactants and products Key Words Reaction Bond Covalent Ionic Objectives State a definition of a chemical reaction in terms of reactants and products Describe how atoms cannot be created or destroyed in a chemical reaction Balance symbol equations

Describe how atoms cannot be created or destroyed in a chemical reaction Balance symbol equations Outcomes State a definition of a chemical reaction in terms of reactants and products Key Words Reaction Bond Covalent Ionic Main Define the term “chemical equation” A change where a new substance is made

Describe how atoms cannot be created or destroyed in a chemical reaction Balance symbol equations Outcomes State a definition of a chemical reaction in terms of reactants and products Key Words Reaction Bond Covalent Ionic Methane + oxygen  water +carbon dioxide CH 4 + 2O 2  2H 2 O + CO 2 Make this reaction using the molymod. How many of each atom is on either side of the equation? Draw the reaction and explain what happens in the reaction.

Describe how atoms cannot be created or destroyed in a chemical reaction Balance symbol equations Outcomes State a definition of a chemical reaction in terms of reactants and products Key Words Reaction Bond Covalent Ionic Plenary Write the balanced chemical equation for the following: Ethanol + oxygen  carbon dioxide + water What happens to the mass when two substances react?