Because it's a registered trade name of a product.
Teflon and Kevlar are brand names, so they are capitalized to indicate that they are specific products developed by companies (DuPont for Teflon and DuPont and others for Kevlar). Other polymers are generic terms and are not specific to a particular brand, so they are not capitalized.
Teflon is polytetrafluoroethylene, so the monomer is tetrafluoroethylene.
As "kevlar" is in fact the trademark of a type of aramid fiber, it may be capitalized (Kevlar) -- or lower-cased, as one often sees with "xerox". [see http://unterm.un.org/DGAACS/unterm.nsf/8fa942046ff7601c85256983007ca4d8/12ce03301316620685256a000007676a?OpenDocument]
Density of POLYTETRAFLUOROETHYLENE (TEFLON):The density of Teflon is 2200 kg/m3.
- Teflon is very resistant to other chemicals - Teflon is a good electrical insulator - Teflon is thermo-resistant - Teflon has a very low coefficient of friction - Teflon is a non-stick material used for coatings - Teflon is a thermoplastic material
Yes.
The word is spelled Tyrannosaurus and as a classification should have a capital T.
The word is spelled Thompson. Since it is a proper noun, a last name, it needs a capital "T".
CapitAl
The word is spelled northeast, just as you spelled it. If you use it as a proper noun, it would need a capital "N". Otherwise, it can be lowercase.
Brazil is spelled with Z in english. In portuguese it's spelled with S. So, the capital name is spelled with "S". BraSilia, capital of BraSil!
no
Yes, it is spelled with a capital "A"
It is spelled Luxembourg and the capital is also Luxembourg.
The capital is Tirana, you spelled Albania wrong.
shift+t = capital T
It is spelled Cheyenne, and it's the capital of Wyoming.