Mass.
density
Amount of mass, or matter, desnity, it depends on context
Mass refers to the amount of mass in an object.
Mass - the amount of somthing a container can hold
Displacement is a word that describes how much distance an object travels through in a given amount of time. If a person drives a car at 50 miles an hour for one hour, the displacement will be 50 miles.
density
Amount of mass, or matter, desnity, it depends on context
Mass.
Mass refers to the amount of mass in an object.
Mass - the amount of somthing a container can hold
It is a measure of the amount of matter in an object.
The word mass in science means the density of an object.
Mass, aggregate, aggregated, aggregative.
The mass is sometimes called the "amount of matter". Please note that "amount of matter" is a very informal, and not very precise, definition of mass. But it's good as a starting point.
Theoretically it is known as the word mass .That is the best answer.
Undulating
It describes an object, so yes it is a noun.