Silicon forms giant covalent molecules in which each Si atom is covalently bonded to 4 other. Si atoms. Covalent bonds are strong (comparable to metallic bonds) and as each Si atom. forms 4 of them all 4 bonds must be broken to separate the atoms and Si has a very high b.p.,
Chiffon, which is a French word for rag, is a lightweight sheer material with a slightly rough feel to it.It can be made from cotton, silk or synthetic fibers, but is usually associated with silk or nylon. Chiffon can be dyed to almost any shade desired, however if made from polyester it is difficult to dye.t tears very easily inside a washing machine, and a garment made of chiffon can rip apart while the wearer is sleeping in it. Most chiffon nowadays is made from polyester (for stain resistance) which is woven as a stretch-knit fabric. Stretch-knit is a way of making non-stretchable fabrics stretch.
A. Chiffonade is a French cooking term that literally means in rags.. It refers to a method of slicing food -- usually lettuce, basil, or other leafy greens -- into thin, string-like pieces.The method for making chiffonade is really quite simple.First, stack your leafy greens, then roll them up like a cigar.t refers to a method of slicing food -- usually lettuce, basil, or other leafy greens -- into thin, string-like pieces. The method for making chiffonade is really quite simple. First, stack your leafy greens, then roll them up like a cigar.