The noise that the plane makes is sometimes so loud that you cannot hear any other noise. Sound is a type of energy. Sounds are produced when an object vibrates. When this happens, the air around the object also vibrates. These vibrations in the air travel as sound waves. A jet engine makes a great deal of sound energy. The engine sounds loud when it is close, but you can sometimes hear the noise when the plane is even several miles away from you.
Definition of Polymer. A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.
Monomers and Polymers. Monomers are small molecules, mostly organic, that can join with other similar molecules to form very large molecules, or polymers. All monomers have the capacity to form chemical bonds to at least two other monomer molecules. monomers.Polymers are a class of synthetic substances composed of multiples of simpler units called monomers. Polymers are chains with an unspecified number of monomeric units.a polymer. Homopolymers are polymers made by joining together monomers of the same chemical composition or structure.eteropolymers are polymers composed of more than one kind of monomer. a polymer consisting of more than one type of monomer. Artificial Polymers and Special Properties. One of the first humans to discover, and make, an artificial polymer, was the German chemist Hans von Pechmann.