Mass divided by volume equals density (D = m/v). The increased volume is double what the old volume was.
The displacement method can be used to determine the volume of an oddly formed metal. Measure the amount of water in a beaker after filling it halfway. Record the new amount of water after inserting the metal into the liquid. To calculate the volume of the metal, deduct the final volume from the original volume of water.
A material's density reduces as it expands because it takes up more space. All types of matter experience this phenomenon.
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