CHEM 134 FINAL QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
||LATEST UPDATED 2026
Question: If the temperature of the surroundings increases during a chemical
process, how is the reaction classified?
Answer: ✔✔ It is an exothermic reaction, meaning the system releases thermal
energy into its environment.
Question: If the temperature of the surroundings drops during a chemical process,
how is the reaction classified?
Answer: ✔✔ It is an endothermic reaction, meaning the system absorbs thermal
energy from its environment.
Question: When a solute dissolves in water and releases thermal energy into the
solvent, what type of process is occurring?
Answer: ✔✔ It is an exothermic dissolution, as energy is given off, causing the
water temperature to rise.
Question: When a solute dissolves in water and draws thermal energy out of the
solvent, what type of process is occurring?
Answer: ✔✔ It is an endothermic dissolution, as energy is absorbed by the solute,
causing the water temperature to drop.
-heat released = -ANSWER ✔✔heat absorbed
qsoln = (solute) -ANSWER ✔✔-qrxn
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
||LATEST UPDATED 2026
Question: If the temperature of the surroundings increases during a chemical
process, how is the reaction classified?
Answer: ✔✔ It is an exothermic reaction, meaning the system releases thermal
energy into its environment.
Question: If the temperature of the surroundings drops during a chemical process,
how is the reaction classified?
Answer: ✔✔ It is an endothermic reaction, meaning the system absorbs thermal
energy from its environment.
Question: When a solute dissolves in water and releases thermal energy into the
solvent, what type of process is occurring?
Answer: ✔✔ It is an exothermic dissolution, as energy is given off, causing the
water temperature to rise.
Question: When a solute dissolves in water and draws thermal energy out of the
solvent, what type of process is occurring?
Answer: ✔✔ It is an endothermic dissolution, as energy is absorbed by the solute,
causing the water temperature to drop.
-heat released = -ANSWER ✔✔heat absorbed
qsoln = (solute) -ANSWER ✔✔-qrxn