States of Matter is the scientific term that groups solids, liquids, and gases. A state of matter is a specific physical form that matter can take, such as solid, liquid, or gas.States and their unique characteristics:Solid is a state of matter that have fixed of definite shape and volume.Liquid is a state of matter that have fixed volume but no definite shape, it take the shape of its container.Gas is a state of matter that have no fixed shape or volume, they only spread out to fill the space they are inMatter can be changed from one state to another through physical and chemical processes. Physical processes, like melting, freezing, and evaporation. Chemical processes, such as combustion, rusting and rotting.