TPS specifically identified seven types of waste or muda: 1  Waste of overproduction or overburden. 2  Waste of time on hand or waiting period. 3  Waste of transportation and shipping. 4  Waste of processing. 5  Waste of keeping stock in hand. 6  Waste of movement. 7  Waste of making defective products.
A phase, or state of matter, is a domain within a many-body system within which relevant physical properties are uniform. Relevant properties may include chemical composition, stoichiometry, and density, which do not reflect how the components are arranged in space.
Definition. 1  As a noun, the common definition of chemical is a substance that is produced or used in a process (reaction) involving changes to atoms or molecules. The term is sometimes defined more broadly as a substance. 2  As an adjective, chemical means of or pertaining to chemistry. Chemistry is the study of matter and its transformations.