To evaluate how to effectively increase the rate of reaction for each substance, let's consider the nature of the substances and the factors that influence chemical reactions:
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Chao (milk): Changing the temperature can increase the rate of reaction, as higher temperatures typically increase the kinetic energy of molecules, leading to more frequent collisions. Concentration would generally apply to solutions, but in the context of milk, changing the temperature is a more relevant factor.
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Mia (carbon dioxide gas): Carbon dioxide is a gas, and adjusting the pressure can influence the reaction rate. By increasing the pressure, the gas molecules become more concentrated, which can lead to more frequent collisions and faster reactions.
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Ezra (rock): To increase the rate of reaction of a solid substance like rock, increasing the surface area (e.g., by crushing it into smaller pieces) would allow more of it to react at once, thus speeding up the reaction.
Given this analysis, the best combination for each student is:
- Chao should change the temperature (milk),
- Mia should adjust the pressure (carbon dioxide gas), and
- Ezra should increase the surface area (rock).
Thus, the correct choice is:
Chao should change the temperature, Mia should adjust the pressure, and Ezra should increase the surface area.
3 answers