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What is the basic difference between volume and mass?
Volume is the amount of space a three-dimensional object occupies and it is measured in cubic units. Two examples of cubic units are cm3 or in3. Mass on the other hand is a measure of how much matter is in an object. Mass is often measured by how much something weighs (in units like pounds or kilograms). An object with the same mass can weigh different amounts if the measurements are made in places with different gravitational pull.