All kilograms have the same weight, as long as they're all on the same planet.
(We don't know what that weight is until we know what planet they're on.)
Not sure if this is a serious question but...A kilogram is a unit of mass, or in this case, weight.A kilogram is a kilogram.One kilogram of anything is a kilogram.1 kg of iron = 1 kg of wool.
On Earth, a kilogram of any substance will always weight 9.8 newtons, no matter what material it is made of.
1 kilogram is 1 kilogram no matter what the substance.
If they are both a kilogram, then they both weigh the same.
iron nails are nails made up of iron
Nails are made of iron, but pennies are copper and zinc. Iron reacts with oxygen to form rust, but copper on the outside of a penny does not.
Although US one-cent coins (pennies) were once mostly copper, today they are 97.5% zinc with a copper plating. Copper nails are rare due to the metal's malleable nature, but zinc nails can be plated with copper as are pennies. Brass is an alloy of copper and zinc, and is widely used.
Iron has a greater density.
Very acidic chemicals can melt iron nails.
Nails are made of iron. If you are as tough as iron then you are really tough.
metal nails rust ANSWER: Iron nails do.
Nails made from Iron will try to return to a simpler state such as Iron Oxide or rust