They are exactly equal . . . an important concept in understanding gravity.
air has no weight
No, both weigh a kilogram
Yes, that's right. Except instead of calling it "the amount of gravity", it should really be "the force of gravity". In both cases, the force is 9.8 newtons, which is about the same as 2.2 pounds.
They both have the same value
If you had a perfect scale, that could read to, say, the millionth decimal place, and you used it for each, then the lead would weigh more, because its center would be closer to the center of the earth.
They both weight a kilogram. Lead has a higher density.
air has no weight
They both weigh the same: 1kg = 1kg. The kg of butter has a greater volume and the kg of lead has a higher density.
Butter has greater volume than lead because butter has more mass.
Their masses are the same, so they have the same weigh whenever they're both on the same planet. A kilogram is a kilogram, no matter what form it takes. 1 kilogram is the exact same measure. Its like asking which is longer, a centimeter of chalk or a centimeter of candy. It's also the same as asking: What weighs more, a pound of feathers or a pound of lead ?
A kilogram is a measure of mass therefore a kilogram of lead and a kilogram of feathers have the same mass: one kilogram. They would, however, have different volumes and densities.
A kilogram of butter as it is less dense than lead.
No, both weigh a kilogram
lead has much higher density
Yes, that's right. Except instead of calling it "the amount of gravity", it should really be "the force of gravity". In both cases, the force is 9.8 newtons, which is about the same as 2.2 pounds.
They both weigh the same !
They both have the same value