8. Thermochemistry

Which of the following correctly represents an exothermic reaction equation?

Which type of energy change occurs during the burning of magnesium ribbon?

In an exothermic reaction, which of the following statements is correct?

In the context of chemical reactions, when does the breaking of chemical bonds release energy?

Which type of reaction is indicated when a fire flares up upon the addition of water?

Which term describes chemical reactions that absorb energy from their surroundings?

In thermochemistry, what is known about a reaction with a positive enthalpy change $\Delta H>0$?

Which one of the following phase changes is exothermic?

Which one of the following phase changes is endothermic?

Which of the following phase changes is exothermic?

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

Which of the following phase changes is exothermic?

When water evaporates, it ________ heat energy and ________ the surrounding air.

When a sealed container of gas is placed into a fire, which of the following is most likely to occur?

Which of the following happens during an exothermic chemical change?