chemistry-c2

chemistry-c2

1. nano-particles

   • Nanoparticles are particles between 1 and 100 nanometres in size
   • nanotechnology
     • the branch of technology that deals with dimensions and tolerances of less than 100 nanometres
     • manipulation of matter on an atomic
     • is the study of extremely small structures
     • An application such as health and medicine, electronics, energy and environment

2. metals and atoms

   • Metals consist of giant structures of atoms arranged in a regular pattern
   • An alloy is a mixture of two or more elements, where at least one element is a metal

3. giant covalent molecules

   • small molecules, which contain a fixed number of atoms joined by covalent bonds
   • giant covalent substances, which contain many atoms joined by covalent bonds
   • the carbon atoms form a regular tetrahedral network structure
   • there are no covalent bonds between the layers