Decide whether each statement describes mass or weight.

1. measured in newtons
2. measured in kilograms
3. does not change when gravity changes
4. changes when gravity changes
5. the amount of matter in something
6. a gravitational force

The answers are as follows:

1. Weight

2.  Mass

3. Mass

4. Weight

5. Mass

6. Weight

Here's why:

Mass is how much matter an object has. It is a scalar quantity. Kilogram is a unit of mass. Gravity has nothing to do with mass. That is why no matter where you are in the universe, you have the same mass even when you are not on Earth.

Weight on the other, is the gravitational force on an object. So it changes, depending on the force gravity applies on it. On Earth for example, the acceleration of objects due to gravity is 9.8m/s². When you multiply it to the mass, you will get the weight which would have the unit kg.m/s², which is also N or Newtons.

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