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Chapter 06 – Discussion
Quantities in Chemical Reactions
- Explain in your own words how a chemical equation is analogous to a cooking recipe.
- In order to make 16 shortbread cookies, a simple recipe requires 1 cup of butter, 1/2 cup of sugar, and 2 cups of flour. Based on this, how many cups of sugar will be needed to make 100 cookies? Please explain your answer.
- A chemical equation is written in terms of moles, but our physical world is not measured in moles. In the chemistry lab, we can measure a substance’s mass. What is necessary to relate the measured mass of a substance to the chemical equation it is part of?
Chapter 06 – Discussion Answer
- Explain in your own words how a chemical equation is analogous to a cooking recipe.
Those two are analogous in terms of having starting materials (reactants) and finished products (products). Both of them shows the ratio of materials needed in order to yield specific amount of products. In a chemical equation, it is in terms of mole while that of a cooking recipe is in terms of cups/teaspoons/tablespoons, etc. You are not allowed to change the chemical names while balancing a chemical equation. Likewise, you can’t simply change ingredients when following a recipe unless it is a kitchen experiment.