Packet for Cu lab, naming and writing formulas, reaction types and ...

Example: CO
I. Write the name of the first element: Carbon
b. Carbon is a non-metal. There is only one atom of oxygen, so we write: mono
II. Write the name of the ion of oxygen: oxide
Answer: CO is Carbon monoxide
Example: CO 2
I. Write the name of the first element: Carbon
b. Carbon is a non-metal. There are two atoms of oxygen this time, so we write: di
II. Write the name of the ion of oxygen: oxide
Answer: CO 2 is Carbon dioxide
Example: Cu(CrO 4)
I. Write the name of the first element: Copper
a. Copper is a metal. We need to find the oxidation number, since copper can be +1 or +2.
Find the oxidation number of the polyatomic ion next to copper. From the back of your periodic table is -2.
Since the compounds must be neutral and there is only one atom of copper, Cu must be +2. Write: II
II.
Write the name of the polyatomic ion (look for it in the back of your periodic table): Chromate
Answer: Cu(CrO 4) is copper II chromate
Example: (NH 4) 3(PO 3)
I. Write the name of the first polyatomic ion Ammonium
No need to add roman numeral, since ammonium is not a metal, but no need to add a prefix either, since
ammonium is not a non-metal element. Notice that ammonium is the only polyatomic cation.
II.
Write the name of the polyatomic ion (look for it in the back of your periodic table): Phosphate
Answer: (NH 4) 3(PO 3) is Ammonium phosphate