What is the metric unit of a piece of chalk?

Answer 1

In the metric (SI) system, the term

massis used instead of

weight. Weight is a measure of how heavy something is, whereas mass is a measure of the amount of matter. To illustrate, something that weighs 60 pounds on the earth would only weigh about 10 pounds on the moon (due to the lower gravity of the moon), whereas something the has a mass of 60 Kilograms on the earth would still have a mass of 60 kilograms on the moon (as the amount of matter is unchanged). Consequently, the statement that 1 kilogram is 2.21 pounds is true here on earth but not elsewhere (a point mainly of interest to scientists).