Polyatomic Ions

Question 1

What is the only positively charged Polyatomic Ion

[symbol and charge]

Answer 1

Ammonium
NH4
+1

Question 2

Give the charge and symbols of Hydroxide; Nitrite and Nitrate.

Answer 2

Hydroxide-OH
Nitrite-NO2
Nitrate-NO3
All have a charge of -1

Question 3

Give the charge and symbols of Hydrogen carbonate; Hydrogen sulfate and Chlorate

Answer 3

Hydrogen carbonate- HCO3
Hydrogen sulfate- HSO4
Chlorate- CLO3
All have a charge of of -1

Question 4

What is Ethonate’s symbol and charge

Answer 4

CH3OO

-1

Question 5

Give vinegar’s symbol charge and its scientific name

Answer 5

CH3OOH
neutral charge
ethanoic acid

Question 6

What is the charge and symbols of Carbonate; sulphite and sulphate.

Answer 6

Carbonate- CO3
Sulfite-SO3
Sulfate-SO4
All have a charge of -2

Question 7

What is the charge and symbol of Phosphate

Answer 7

PO4

-3

Question 8

Give 3 examples of where Polyatomic ions are bonded with elements to create compounds.

Answer 8

1. HCO3 [Hydrogen Carbonate] combines with Sodium [Na] to create sodium hydrogen carbonate [NaHCO3]
2. CO3 [Carbonate] combines with hydrogen [H] to create carbonic acid [H2CO3] acid used in fizzy drinks.
3. CH3COO [Ethanoate] combines with Hydrogen [H]
   to create Ethanoic acid [CH3OOH] or ,as we know it, Vinegar.