Player #1
Hints:
1. Write a barium ion, with the charge
(Ba2+)
2. Write a chlorate ion, with the charge
(ClO3–)
3. How many of each ion do you need to
make the charges equal? (1 barium with
2 chlorates)
4. Since you have more than one chlorate,
what needs to go around it? (brackets)
5. Answer: Ba(ClO3)2
;
Player #2
Write the formula for barium chlorate.
Write the formula for tin (IV) chloride
Hints:
1. Write a tin (IV) ion, with the charge
(Sn4+)
2. Write a chloride ion, with the charge
(Cl–)
3. How many of each ion do you need to
make the charges equal? (1 tin with 4
chloride)
4. Answer: SnCl4
Hints:
Write the formula for platinum (II)
permanganate
1. Write a platinum (II) ion, with the charge
(Pt2+)
2. Write a permanganate ion, with the
charge (MnO4–)
3. How many of each ion do you need to make
the charges equal? (1 platinum with 2
permanganate)
4. Since you have more than one chlorate,
what needs to go around it? (brackets)
5. Answer: Pt(MnO4)2
Write the name for Ca3(BO3)2
Hints:
1. What is the name of the positive ion?
(calcium)
2. What is the name of the negative ion?
(borate)
3. Is calcium one of those weird metals that
has more than one charge? If it is, what
do you need to do? (No; you don’t need a
roman numeral after the name to tell what
the charge is)
4. Answer: calcium borate
Hints:
1. What is the name of the positive ion?
(iron)
Write the name for Fe3P2
2. What is the name of the negative ion?
(phosphide)
3. Is iron one of those weird metals that has
more than one charge? If it is, what do you
need to do? (Yes; you need a roman numeral
after the name to tell what the charge is)
How many negative charges are there from
the phosphide? (2 ions x -3 = -6)
How many positive charges have to be on
each iron ion? (6 ÷ 3 = 2)
4. How do you show the charge on the iron?
(iron (II))
5. Answer: iron (II) phosphide
Write the name for V(Cr2O7)2
Hints:
1. What is the name of the positive ion?
(vanadium)
2. What is the name of the negative ion?
(dichromate)
3. Is vanadium one of those weird metals
that has more than one charge? If it is,
what do you need to do? (Yes; you need a
roman numeral after the name to tell what
the charge is)
How many negative charges are there
from the dichromate? (2 ions x -2 = -4)
How many positive charges have to be on
the vanadium ion? (+4)
4. How do you show the charge on the iron?
(vanadium (IV))
5. Answer: vanadium (IV) dichromate