Velocity denotes the relationship between the displacement or path of an object and the time it takes to make this change in position.

A molecule is the union of two or more atoms and is the smallest particle that makes up a substance.

Physical properties of matter can be observed and measured without [...]

Matter can be presented in different states, These are the [...]

Matter exists in different states and they can be three: [...]

Density is the quantity of matter packed into a unit volume of material. It can be measured in kilograms per cubic metter

In a simple definition, Matter is anything that has mass and takes up space (volume).