5 words in this vocabulary list
noun a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons
noun a characteristic that is inherent or innate
adjective existing as a natural or essential characteristic
noun the quality of being able to bounce back easily after being compressed or stretched
noun a type of synthetic resin made from the polymerization of formaldehyde and another compound, often used in the production of various plastic products
noun a noun is a word that represents a person, place, thing, or idea. In this case, 'acoustic mass' is a noun that refers to a physical object or substance related to sound and vibration.