8. Thermochemistry

Which of the following chemical or physical changes is an endothermic process?

Which type of reaction typically occurs in a chemical hand warmer?

Which statement best describes an exothermic reaction?

Which of the following best describes an endothermic reaction?

When heat is added to a substance, which of the following typically occurs?

Given the reaction: 2H_2(g) + O_2(g) ightarrow 2H_2O(l), predict whether this reaction is exothermic or endothermic.

Which of the following is absorbed during an endothermic reaction?

Which of the following changes of state releases thermal energy?

Which statement correctly describes the difference between endothermic and exothermic reactions?

Which of the following processes occurs as an ice cube cools a drink?

Which energy change occurs during an endothermic chemical reaction?

Which of the following is an example of an exothermic reaction?

Which of the following processes is classified as exothermic?

Which method do scientists commonly use to determine whether a chemical reaction is endothermic or exothermic?

Which of the following reactions is endothermic?