Temperature and Heat Answers

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Which best describes the difference between internal and thermal energy?

A
Internal energy is the total potential energy in a substance, and thermal energy is the total kinetic energy in a substance.
B
Thermal energy is the total potential energy in a substance, and internal energy is the total kinetic energy in a substance.
C
Internal energy is the total potential and kinetic energies in a substance, and thermal energy is the part of internal energy that can be transferred to another substance.
D
Thermal energy is the total potential and kinetic energies in a substance, and internal energy is the part of internal energy that can be transferred to another substance.
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Gold atoms are heavier than iron atoms.Iron atoms are heavier than gold atoms.Gold atoms have the same mass as iron atoms.

A
Gold atoms are heavier than iron atoms.
B
X Iron atoms are heavier than gold atoms.
C
Gold atoms have the same mass as iron atoms.

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