What's heavier a kilogram of steel or a kilogram of feathers?
Both are the same weight, a kilogram. The difference is in their mass. Steel is denser than feathers, so a kilogram of steel takes up less space than a kilogram of feathers. Does that help?
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:

What's heavier a kilogram of steel or a kilogram of feathers?

### Response:

Both are the same weight, a kilogram. The difference is in their mass. Steel is denser than feathers, so a kilogram of steel takes up less space than a kilogram of feathers. Does that help?
