Neither. Since they both have a weight of 1kg one cannot be heavier than the other.
It depends on how much of each that you have. A square inch cube of lead will likely be heavier than a square inch cube of styrofoam.
Lead has the highest density, followed by wood (assuming an average density wood), polystyrene foam would have the lowest density.
Lead.
Because it is smaller in volume.
lead is much more dense than feathers, so 1 kg of lead occupies much less space (volume) than 1 kg of feathers
polystyrene is not heavy can be heavy in certain places though
Polystyrene
1kg
please quickly
Lead.
Uranium atom is the heaviest.
they are the same
Because it is smaller in volume.
Lead has a higher density than steel.
They both weigh the same !
The cast of Polystyrene Dreams - 2012 includes: Robin Holder as Forewoman Riccardo Tarocco as Lead Poly
They both weigh the same: 1kg = 1kg. The kg of butter has a greater volume and the kg of lead has a higher density.
lead is much more dense than feathers, so 1 kg of lead occupies much less space (volume) than 1 kg of feathers
The lead and the copper will weigh the same. But there will be less lead than copper by volume if both materials are solids. And that's because lead is more dense than copper. A given volume of lead weighs more than that same volume of copper. It turns out that 1kg of something will weigh the same as 1kg of something else, though the two may have different volumes for that weight. A kg of lead takes up a lot less room (volume) than a kg of ping pong balls, even though they both weigh the same.