Building Project Information. On May 2, 2017, the New Bremen Schools Board of Education will be placing a bond levy on the ballot for a new K-8 building. You can find more information about the building project by using any of the Building Project links within the red navigation bar above or by clicking here.
Bitumen is the thickest form of petroleum there is, made up of 83% carbon, 10% hydrogen and lesser amounts of oxygen, nitrogen, sulphur, and other elements. It is a natural polymer of low molecular weight: at lower temperatures it is rigid and brittle, at room temperature it is flexible, at higher temperatures it flows.
The chemical composition of plastics is different depending on what type of plastic your dealing with. But for the most part the raw material of plastic is hydrocarbons found naturally in oil. Take cellulose acetate--a very popular polymer, used mostly in thin films. It's made from cotton.Some rubbers are made from the sap of a tree.ut for the most part the raw material of plastic is hydrocarbons found naturally in oil. Take cellulose acetate--a very popular polymer, used mostly in thin films. It's made from cotton. Some rubbers are made from the sap of a tree.