Q: Chemical and physical changes in a system may be accompanied by an increase or a decrease in the disorder of the system, corresponding to an increase or decrease in what? Choices: - enthalpy - vibration - volume - entropy A:
entropy

Q: Inside a cylinder, thermal energy is converted to what type of energy of the moving piston? Choices: - residual energy - horsepower - electrochemical energy - kinetic energy A:
kinetic energy

Q: What is the term for water that falls from clouds? Choices: - lightning - atmosphere - wind - precipitation A:
precipitation