Here's a breakdown:

* Weight is the force of gravity acting on an object's mass.

* Mass is the amount of matter in an object.

Key Concepts:

* Gravity: A force of attraction between any two objects with mass. The more massive the objects, the stronger the gravitational pull.

* Weight = Mass x Gravity

Example:

* On Earth, gravity is about 9.8 m/s².

* If you have an object with a mass of 10 kilograms, its weight on Earth would be:

* Weight = 10 kg x 9.8 m/s² = 98 Newtons (N)

Important Note: While an object's mass remains constant, its weight can change depending on the gravitational force it experiences. For example, you would weigh less on the moon than on Earth because the moon's gravity is weaker.