■explain how substances expand on the basis of vibrational motion of atom?
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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.
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om vibration substance expand when we vibrates any substance rhe thing which os in the of that substance also vibrate thab the shape the substance will and it will also
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