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What has more mass 1 kg of lead or 1 kg of feathers?
Neither!!! They both have the same mass at 1 kg. However, the feathers will occupy a greater volume.
What has more mass 10 kilograms of feathers or 6 kilograms of lead?
10 kg is greater than 6 kg. kg is the unit of mass. Hence feather has more mass than lead in this case.
Why does a kilogram of lead have a bigger density than a kilogram of feathers?
The density of a material is defined as its mass per unit volume. A given volume of lead has more mass than a given volume of feathers. In common usage mass often refers to weight, but that is not a very exact usage of it. For this question it may be useful however to think of a given weight of lead per volume and a given weight of feathers.If you have a kg of lead, that is a small piece, a kg of feathers is a large amount.So for a given volume, say a cubic centimeter, the weight of lead is much more than the weight of feathers.
Which has more mass 1 kilogram of feathers or 1 kilogram of bricks?
Neither. They both have the same mass. "kg" is a measurement of mass. If you meant volume (the space taken up by the object), the feathers would have the greater volume.
Why does a kg of sand take up less space then a kg of feathers?
Because sand is a more dense substance than feathers - it has a larger mass-to-volume ratio.
