Respuesta :
you have written the answer within your question.
mass of 1kg metal is "1 kilogram"
but when you talk about it's weight
then,
it's weight is 9.8 Newton.
mass of 1kg metal is "1 kilogram"
but when you talk about it's weight
then,
it's weight is 9.8 Newton.
Your question is exactly like asking "What color is an orange ?", or "Who is buried in Grant's tomb ?", or "What color is the White House ? .
The mass of 1 kilogram of anything is 1 kilogram.
The mass of 1 kilogram of anything is 1 kilogram.