Important

Question 1

explain in terms of electrons how Mg reacts with O

Answer 1

The two electrons donated from one magnesium atom are taken up by an oxygen atom. Oxygen atoms have 6 electrons in their highest energy level, and require a further 2 to fill the outer shell. Therefore, they take up these two electrons to form negatively charged O2- ions and the magnesium is left with a 2+ charge

Question 2

Ore

Answer 2

A rock containing a metal compound

Question 3

Electronic structure refers to

Answer 3

The electrons in the shells

Question 4

Chemical test for water

Answer 4

Anhydrous copper sulfate - white to blue

Cobalt chloride paper - blue to pink

Question 5

when a metal bonds to a metal what type of bonding is it?

Answer 5

metallic bonding

Question 6

when a metal bonds to a non-metal what type of bonding is it?

Answer 6

ionic bonding

Question 7

when a non-metal bonds to a non-metal what type of bonding is it?

Answer 7

covalent bonding