8. Thermochemistry

Which form of energy is typically released during an exothermic chemical reaction?

When two chemicals react in an endothermic reaction, which statement is correct about the energy changes involved?

Which of the following reactions requires an input of energy to occur?

When ice cubes are placed in water at 45°C, which transfer of energy occurs?

When heat is removed from a substance, which of the following is most likely to occur?

Which of the following reactions is exothermic?

Which one of the following chemical equations represents an exothermic reaction?

Which of the following is true for all reversible exothermic processes?

In thermochemistry, what can be concluded about a reaction with a negative enthalpy change $\Delta H<0$?

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?