Question:What do we mean by a 'Physical Property'?
Think about it like this:
If you look at an object you can see that it has size and shape, and colour.
These properties describe the object and we say that size and shape and colour etc are physical properties of the object.
Physical properties cannot be removed from the object.
You cannot have size or shape on their own - they must be the size or shape of an object.
There are also other physical properties of an object that we can also detect or measure but that are not immediately obvious.
For instance taste.
An object may have a taste, which can come in several different kinds or it may have no taste at all.
So we say that taste is a physical property of the object.
So electric charge is just another way in which one object can be different to another.
If an object has an electric charge, then like 'taste', this tells us something about the object.