2+-+rebollo+-+silicon


 * Silicon ** [[image:tpVVg-B52UjbvL9Y94WetQqPBCJ3iLX7Mp-tdMDxKFw0z4GJssUufodbtEe-WifucHp1=s102.jpg width="167" height="141"]]

Si Silicon was discovered in the year 1824. Silicon came from Latin "silex" or "silicis" which means flint. Silicon is one of the most useful to mankind. Sand and clay both contain silicon and they are used to make concrete and cement. Silicon has 14 protons and they are all positive. It also has 14 electrons and they are negative. It has 14 neutrons and they are positive.

We use silicon to make ceramic brick, and we use silicon to make the building that have clay in. Also Silicon is common because people use Silicon to make glass like in computers.