A chemist is performing a chemical reaction under a fume hood. The chemist has a set of beakers, flasks, and tubes set up under the fume hood, with various liquids being combined inside the glass containers. The fume hood is turned on in order to withdraw any toxic gases and expel them outside the building.

Which part of this system is designated as the chemical reaction system?

liquid contents of the glass containers
the glass containers
outside of the building
inside the fume hood

The chemical reaction system in this scenario would be the liquid contents of the glass containers. They are being combined together to produce a chemical reaction. The glass containers are simply the vessels holding the liquids, and the fume hood is the apparatus being used to ensure safety during the experiment. The outside of the building is unrelated to the chemical reaction system.

The chemical reaction system in this setup would be the combination of the liquid contents inside the glass containers. The glass containers themselves, such as the beakers, flasks, and tubes, are just the vessels used to hold and mix the liquids. The fume hood is responsible for providing a controlled environment to safely conduct the reaction by withdrawing any toxic gases and expelling them outside the building. So, while the inside of the fume hood is essential for the safety of the chemist and the surroundings, it is not the designated chemical reaction system.

The chemical reaction system in this scenario refers to the liquid contents of the glass containers. It is within these containers that the actual chemical reaction is taking place as the chemist combines various liquids.