2.4 Chemical Formulas and Nomenclature

Question 1

if the number of oxygen atoms is x + 1, what’s the naming rule? Give an example

Answer 1

naming rule:

per____ate

e.g. perchlorate: CLO(subscript 4)and (-1 charge)

Question 2

if the number of oxygen atoms is x, what’s the naming rule? Give an example

Answer 2

_______ate (regular naming)

e.g. chlorate: CLO(subscript 3) and (-1 charge)

Question 3

if the number of oxygen atoms is x - 1, what’s the naming rule? Give an example

Answer 3

__________ite

e.g. chlorite: CLO(subscript 2) and (-1 charge)

Question 4

if the number of oxygen atoms is x - 2, what’s the naming rule? Give an example

Answer 4

hypo_________ite

e.g. hypochlorite: CLO (-1 charge)

Question 5

what does “per” mean in pernitrate?

Answer 5

add per to indicate one more oxygen

Question 6

what does “ite” mean in nitrite

Answer 6

change –ate to ite to indicate one less oxygen

Question 7

what does “hypo” and “ite” together mean in hyponitrite

Answer 7

2 less oxygen atoms

Question 8

prefix for 5

Answer 8

penta

Question 9

prefix for 7

Answer 9

hepta

Question 10

prefix for 6

Answer 10

hexa

Question 11

prefix for 8

Answer 11

octa

Question 12

prefix for 10

Answer 12

deca

Question 13

prefix for 9

Answer 13

nona

Question 14

prefix for 12

Answer 14

dodec

Question 15

prefix for 11

Answer 15

undec

Question 16

what’s a hydrate

Answer 16

A hydrate refers to an ionic compound which
contains a certain number of water molecules

Question 17

write the chemical formula for aluminum hydroxide hexahydrate

Answer 17

Al(OH)3 * 6H2O

Question 18

Write the name of CuSO4*5H2O

Answer 18

Copper (II) Sulfate Pentahydrate