Ions and Constructing Formulae

Question 1

What is an ion?

Answer 1

An atom that has lost or gained an electron and is now charged

Question 2

In terms of loss and gain of electrons, how atoms form ions in : Group 1

Answer 2

Lose 1e⁻

Question 3

In terms of loss and gain of electrons, how atoms form ions in : Group 2

Answer 3

Lose 2e⁻

Question 4

In terms of loss and gain of electrons, how atoms form ions in : Group 6

Answer 4

Gain 2e⁻

Question 5

In terms of loss and gain of electrons, how atoms form ions in : Group 7

Answer 5

Gain 1e⁻

Question 6

Diatomic elements

Answer 6

H₂, O₂, N₂, F₂, Cl₂, Br₂, I₂

Question 7

Formula of ions of Zinc, Sliver and Nickel

Answer 7

Zinc = Zn²⁺
Sliver =Ag⁺
Nickel = Ni²⁺

Question 8

Why some compound names end in : -ide

Answer 8

These contain only 2 elements

Question 9

Why some compound names end in : -ate

Answer 9

These contain at least 3 elements, one of which is oxygen, bonded to the non-metal

Question 10

Formulae of : Hydrochloric, sulfuric acid, nitric acid

Answer 10

Hydrochloric = HCl
Sulfuric acid = H₂SO₄
Nitric acid = HNO₃