2.3 Formulae and Equations

Question 1

What is a binary compound

Answer 1

a compound that contains two elements only

Question 2

How do you name a binary compound

Answer 2

1. use the name of the first element bur changing the ending of the second element to -ide
2. for ionic compounds, the metal ion always comes first

Question 3

What is a polyatomic ion

Answer 3

ions formed of more than 1 element bonded together

Question 4

What is the name and charge of NH4

Answer 4

ammonium
+1

Question 5

What is the name and charge of OH

Answer 5

hydroxide
-1

Question 6

What is the name and charge of NO3

Answer 6

nitrate
-1

Question 7

What is the name and charge of N02

Answer 7

nitrite
-1

Question 8

What is the name and charge of HCO3

Answer 8

hydrogen carbonate
-1

Question 9

What is the name and charge of MnO4

Answer 9

manganate (VII)
-1

Question 10

What is the name and charge of CO3

Answer 10

carbonate
2-

Question 11

What is the name and charge of SO4

Answer 11

sulfate
2-

Question 12

What is the name and charge of SO3

Answer 12

sulfite
2-

Question 13

What is the name and charge of SO3

Answer 13

sulfite
2-

Question 14

What is the name and charge of Cr2O7

Answer 14

dichromate
2-

Question 15

What is the name and charge of PO4

Answer 15

phosphate
3-

Question 16

Charge of Zn

Answer 16

2+

Question 17

Charge of Ag

Answer 17

Ag+

Question 18

What is a diatomic molecule

Answer 18

element with two atoms bonded together

Question 19

What are the diatomic molecules

Answer 19

H2, N2, O2, F2, Cl2, Br2, I2, P4, S8