Question

When an object is heated, the molecules that make up the object________

Aa) begin to move faster

Bb) lose energy

Cc) begin to move slow

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Answer 1

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Answer 2

Answer:

begin to move faster

is right answer..