this is a badly worded question. By pure do you mean "formed of one type of molecule"? And what do you mean by plastic? there are many different types. some have multiple types of hydrocarbon chains, some have a single type of molecule. Also nothing is 100% without contamination so there will always be some "impurities" in a sheet of plastic.
Plastic in its self is a manufactured substance unlike wood or other items. This most likely refers to the amount of oil or another substance added to the plastic.
Plastic in its self is a manufactured substance unlike wood or other items. This most likely refers to the amount of oil or another substance added to the plastic.
Copper is a metal.
Plastic is a non-biodegradable substance. Yes, it is long lasting.
clay,wood,plastic,iron
Plastic is artificial because it is not (formed as) a natural substance, not in or by living organisms, like animals, plants or microbes.
its made out of a plastic substance with a layer with paper for the cover
Oh, dude, plastic wrap is definitely a homogeneous substance. It's like a seamless blend of chemicals, all mixed together so you can wrap your sandwich without worrying about weird lumps or bumps. So yeah, it's all the same throughout, just like my love for pizza.
If it to merely carry a chemical it is called a vial
Rubber is a naturally occurring substance from the sap of rubber trees. Plastic is a man made polymer made from oil.
Plastic in its self is a manufactured substance unlike wood or other items. This most likely refers to the amount of oil or another substance added to the plastic.
Any substance that can be decomposed by bacterial action is referred to as biodegradable. For example, plastic is not biodegradable but paper is a biodegradable material.