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No, 1 kilogram of gold and 1 kilogram of feathers weigh the same amount, as they both have a mass of 1 kilogram. However, gold is denser than feathers, so the volume of 1 kilogram of gold would be smaller than the volume of 1 kilogram of feathers. This is due to the differing densities of the materials, with gold being much denser than feathers.
a kilogram of bricks
Their mass is 1 kg.
A kilogram of sand takes up less space than a kilogram of air, because sand is more dense than air. A kilogram of sand takes up more space than a kilogram of gold, because sand is less dense than gold.
the gold would have more mass unless there is no gravity like on the moon then they would both fall at the same time.