Silicon Dioxide (silica)

Question 1

what is silicon dioxide formed from? [1]

Answer 1

silicon and oxygen atoms

Question 2

what type of bonding is in silicon dioxide?

Answer 2

covalent bonding

Question 3

what are the properties of silicon dioxide?

Answer 3

-very hard
-high melting, boiling points
-cannot conduct electricity.

Question 4

what is silicon dioxide used in?

Answer 4

manufacture of glass (windows)