2. Balancing Everyday Equations 7.3 By: Erika, Jamie, & Amelia

3. Vocabulary Qualitative – nonnumeric measurement that still shows both the parts and the whole Quantitative – a measurement that indicates the number of each part to make a whole Reactant – the kinds of parts Product – what the parts in the equation make up Coefficient – a small whole number that appears in front of a formula in a balanced chemical equation

4. Understanding Everyday Equations Everyday equations can be used to help explain how to balance chemical equations. You come in contact with these equations constantly without even knowing it. Everyday equations are just components put together to make a whole.

5. Qualitative Qualitative equations are the parts placed together WITHOUT specific numbers. Qualitative example of a bicycle: Frame + Wheel + handlebar + pedal → Bicycle Qualitative equations are the simpler version of quantitative equations. Qualitative only include the parts that make up the whole.

6. Quantitative Quantitative equations are the parts placed together WITH specific numbers. Quantitative example of a bicycle: F + W + H + P → FW 2 HP 2 The product of this equation includes specific numbers, giving it a quantity. However this equation is unbalanced.

7. Balanced Everyday Equations In the previous slide the quantitative equation was unbalanced because the product had more materials than the reactants we pieced together. F + W + H + P → FW 2 HP 2 To make a balanced equation you need to have a full description of both the kind and the number of parts. A balanced everyday equation example: F + 2W + H + 2P (could be seen as P 2 ) → FW 2 HP 2

8. Is This Balanced? 1)(Hockey Team) D + O + G → D 2 O 3 G a.Yesb. NoYesNo 2) (Clothing) T + P + 2S → TPS 2 a. Yes b. NoYesNo

9. Make This Balanced You are out to eat and you order a cheese burger. Little do you know that cheese burger can be made into an everyday equation. On the burger you have:  1 piece of meat  1 piece of cheese  2 pieces of lettuce  5 pickles  2 tomatoes Make this into a balanced everyday equation. Meat + cheese + lettuce + pickles + tomatoes → cheeseburger M + C + 2L + 5P + 2T → MCL 2 P 5 T 2

10. Homework Question You and your friends are going to a concert. You are going to see your favorite band. When you arrive you notice the type of instruments on stage. You see: 1 guitar 1 bass 4 drums 2 saxophones 3 keyboards How would you write a balanced equation for this?

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