7.3 BALANCING EVERYDAY EQUATIONS BY: DANIELLE RASH, JUSTIN SHAZAR AND ERIC REYES-MUNOZ

WHAT IS AN EVERYDAY EQUATION? Everyday equations show qualitative and quantitative relationships between reactants and products. Everyday equations show qualitative and quantitative relationships between reactants and products. A qualitative relationship shows the type of reactants used in the equations. A qualitative relationship shows the type of reactants used in the equations. A quantitative relationship shows the number of each reactant used. A quantitative relationship shows the number of each reactant used. Let’s put this into simpler terms. Let’s put this into simpler terms.

WRITING A BALANCED EQUATION Reactants on right, products on the left. Reactants on right, products on the left. Ex. Frame + wheel + handlebar + pedal  Bicycle (Reactants) (Product) Ex. Frame + wheel + handlebar + pedal  Bicycle (Reactants) (Product) Convert words to letters. Ex. F+W+H+P  FWHP Convert words to letters. Ex. F+W+H+P  FWHP If more than one of anything, put a coefficient in front of letter reactants, and subscripts after letter products. If more than one of anything, put a coefficient in front of letter reactants, and subscripts after letter products. Ex. F + 2W + H+ 2P  FW₂HP₂ Ex. F + 2W + H+ 2P  FW₂HP₂ Let’s show pictures for you visual learners. Let’s show pictures for you visual learners.

BICYCLE EXAMPLE What parts do you need to build a bike? The components: 1 Bike Frame 2 Pedals 1 Handle Bar 2 Wheels

PIZZA EXAMPLE What ingredients do you need to make a pizza? What ingredients do you need to make a pizza? The Components: The Components: 1 cup of cheese 1 cup of cheese 2 cups of sauce 2 cups of sauce 1 package of dough 1 package of dough 14 slices of pepperoni 14 slices of pepperoni C + 2S+ D + 14P  C S D P 214

CAR EXAMPLE What parts do you need to build a car? What parts do you need to build a car? The components: The components: 4 Wheels 4 Wheels 1 Engine 1 Engine 1 Car Frame 1 Car Frame ++ 4W + E + F  W 4 EF

WHAT IS THE CORRECT PRODUCT FOR THIS EQUATION? 17L + 4P + F + 2G + 3C + 2A A.P ₂ G ₃ A ₄ L ₂ F ₁₇ C B.F A ₂ G ₂ P ₄ C ₃ L ₁₇ C.L ₁₇ P ₃ F ₄ G ₂ C A ₂ D.F ₄ A ₂ P G ₂ C ₃ L ₁₇

C + 3F + 7G  FG ₃ C ₇ IS THE EQUATION BALANCED? C + 3F + 7G  FG ₃ C ₇ A.Yes B.No

FACTS Balanced equations are always used when cooking. Ex. Cooking an omelet, Baking cookies Balanced equations are used when creating teams/groups. Ex. Restaurant Kitchen

PQP HW Q: If a soccer team calls for a goalie, four defenders, three midfielders, and three forwards, what is the balanced equation needed?