8. Thermochemistry

Which type of reaction releases energy to the surroundings?

Which of the following energy profile diagrams best represents an exothermic reaction?

During an endothermic reaction, what typically happens to the temperature of the surroundings?

Which of the following is a similarity between the energy profiles of exothermic and endothermic reactions?

Which of the following phase changes is endothermic?

Jan is holding an ice cube. What causes the ice to melt?

Which of the following physical changes is endothermic?

A reaction which is endothermic and has an overall increase in entropy is:

In an exothermic reaction, what happens to energy?

In a reaction energy diagram, which label represents the overall enthalpy change (ΔH), and how can you determine if the reaction is exothermic or endothermic?

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

When ammonium chloride (NH_4Cl) dissolves in water, the temperature of the solution decreases. Is this process endothermic or exothermic?

Which of the following best describes what happens in an exothermic reaction?

Which of the following describes an exothermic reaction?

Which of the following reactions releases energy?