: an isomer that is a stereoisomer of a compound having two or more chiral centers and that is not a mirror image of another stereoisomer of the same compound â
A compact disc is a deceptively simple looking device considering the technology required to make it. 1  CDs consist of three layers of materials: 2  A base layer made of a polycarbonate plastic. 3  A thin layer of aluminum coating over the polycarbonate plastic. 4  A clear protective acrylic coating over the aluminum layer.
Sheet tobacco is made from taking all the waste from tobacco such as stems, stocks, and other waste, and then they form sheets by adding glue, fungicides, flavors and colors to make it taste and look like real tobacco, and other chemicals. This is the crap that is sold as cigarettes in the US.