The Kelvin scale starts at:, C) absolute zero, D) boiling point, Temperature is directly proportional to:, D) mass of the object, B) average kinetic energy of particles, When energy is added to a gas, the particles:, C) have higher average kinetic energy, D) decrease in number, Internal energy is defined as:, C) total energy of all particles in a substance, D) only heat energy, Thermal equilibrium occurs when:, B) heat stops flowing between objects, C) particles stop moving, Temperature is meaningful only when:, D) particles stop vibrating, B) the system is stable, Which form of motion involves bending and stretching of bonds?, D) Linear, C) Vibrational, Which type of energy is involved in vibrational motion?, potential only, C) kinetic and potential.

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