I hope you didn’t fall for it and say steel! The answer is that a kilogram of steel weighs exactly the same as a kilogram of feathers. They each weigh a kilogram!
Consider how large a sack of feathers weighing 1kg would be. Compare it to the size of 1kg of steel. The 1kg bag of feathers would be much bigger than 1kg of steel. This is because the density of steel is higher than that of feathers. Basically, density is how compact an object is.Put another way, d