Chemistry Thermodynamics Multiple Choice Exam || Complete Questions & Answers (100% Correct)

Chemistry Thermodynamics Multiple Choice Exam || Complete Questions & Answers (100% Correct) Chemistry Thermodynamics Multiple Choice Exam || Complete Questions & Answers (100% Correct) Temperature is proportional to the ______ of the particles in a substance - ANSWER - Average kinetic energy A 5 kg cast iron frying pan at 40 degrees Celsius has more internal energy than a 3 kg cast iron pan at 40 degrees Celsius - ANSWER - True The energy that flows between objects at different temperature is called - ANSWER - Heat Heat always flows from a lower temperature body to a higher temperature body - ANSWER - False The state in which two or more bodies in contact with one another have identical temperatures is called - ANSWER - Thermal Equilibrium 50 o F is equivalent to - ANSWER - 10 degrees Celsius Absolute zero is - ANSWER - the lowest possible temperature The amount of energy required to raise the temperature of a 2 kg silver chain by 2oC is - ANSWER - d. 936 J (2 kg)(2 degrees)(234 [specific heat]) The amount of energy required to completely vaporize 5 kg of water at 100oC is - ANSWER - 1.13 x 107 J Which type of energy transfer explains the temperature increase throughout an iron rod when one end is placed in a fire? - ANSWER - thermal conduction Which type of energy transfer is illustrated by the rising of hot air over a flame? - ANSWER - convection How much work is done by a gas that exerts a pressure of 4 x 105 Pa while increasing its volume by 0.025 m3? - ANSWER - 10,000 J In which thermodynamic system is work done on or by the system but no energy is transferred to or from it as heat? - ANSWER - adiabatic What is the internal energy change of a system that adds 100 J of heat while doing 200 J of work - ANSWER - -100 J