In preparing students to write a chemical equation, we often use analogies. Let's write an equation for the construction of a car with just 2 doors. We'll use doors, body, interior, tires.

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In preparing students to write a chemical equation, we often use analogies. Let's write an equation for the construction of a car with just 2 doors. We'll use doors, body, interior, tires.

a 2 doors + 1 body + 1 interior + 4 tires → 1 car

b doors + body + interior + tires → car

c 4 doors + 1 body + 1 interior + 4 tires → 1 car

d 2 doors + 1 body + 1 interior + 4 tires == 1 car