8. Thermochemistry

Which of the following best explains what makes a chemical reaction endothermic?

Which type of chemical reaction absorbs energy from its surroundings?

In which one of the following processes is the system endothermic?

Which term describes a chemical reaction that absorbs heat from its surroundings?

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?

Given 382.0 g of hot tea at 82.0 °C, what mass of ice at 0 °C must be added to obtain iced tea at 15.0 °C? The specific heat of the tea is 4.18 J/(g·°C), and ΔHfusion for ice is +6.01 kJ/mol.

Which one of the following phase changes is endothermic?

Which of the following phase changes is exothermic?