* Mass is the amount of matter in an object. It is measured in kilograms (kg).
* Volume is the amount of space an object takes up. It is measured in cubic meters (m³).
* Weight is the force of gravity on an object. It is measured in newtons (N).
The relationship between mass, volume, and weight can be expressed by the following equation:
```
weight = mass × gravity
```
where:
* weight is in newtons (N)
* mass is in kilograms (kg)
* gravity is in meters per second squared (m/s²)
The acceleration due to gravity on Earth is approximately 9.8 m/s². This means that a 1 kg object will weigh approximately 9.8 N on Earth.
Mass is a fundamental property of matter, while volume and weight are derived properties. This means that mass can be measured directly, while volume and weight must be calculated from other measurements.
