Is mass conserved when 50 g of sugar undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

Mass is conserved when 50 g of sugar undergoes a physical change. This can be demonstrated through weighing the sugar before and after the physical change. If the mass remains at 50 g, it shows that no mass was lost during the physical change. For example, if the sugar is dissolved in water, the weighed mass of the solution, including the water, should still add up to 50 g. This demonstrates that no mass was lost during the physical change of dissolving the sugar. Therefore, the conservation of mass is upheld.