According to the following map, what is a type of mineral found in Mexico? a Bauxite
b Copper
c Gold
d Zinc

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

One does not belong why? ice, gold ,wood ,diamond and table salt

How are isotopes of the same chemical element alike? how are they different?