Question

The amount of molecular movement within a substance

Which of the following correctly completes the sentence above?
A is independent of the amount of energy it has acquired.
B
C
D
increases as it gains heat and decreases as it loses heat.
decreases as it gains heat but does not increase in temperature.
is always independent of the temperature of the molecule.

Answer 1

The amount of molecular movement within a substance increases as it gains heat and decreases as it loses heat.

Step-by-step explanation:

The correct completion of the sentence is:

increases as it gains heat and decreases as it loses heat.

When a substance gains heat, the molecules within it become more energetic and move faster, leading to an increase in molecular movement. On the other hand, when a substance loses heat, the molecules become less energetic and move slower, resulting in a decrease in molecular movement.

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