In everyday language, we often use the terms "light" and "heavy" to describe the weight or mass of objects. Weight is a measure of the force exerted on an object due to gravity, whereas mass is a fundamental property of matter that represents the amount of material present in an object.
So, strictly speaking, an object's weight and mass can be different concepts. However, in common usage, when we say an object is "light" or "heavy," we are usually referring to its weight or perceived weight.
Weight can vary depending on the gravitational force acting upon an object. For example, an object may feel lighter on the Moon compared to Earth due to the Moon's weaker gravitational pull. However, the object's mass remains the same regardless of the gravitational field it is in.
In terms of an object becoming light or heavy, it can be subjective based on perception. For instance, lifting a heavy object may make it feel "heavy" to you due to the effort required to lift it. Similarly, a relatively lighter object may be perceived as "light."
It's important to note that the weight or mass of an object is an inherent property of the object itself and does not change unless external factors like gravity or applied forces come into play. Objects can't change their weight or mass on their own accord.