Ion and formulae

Question 1

When metals react, what do they tend to do?

Answer 1

Loses electron(s) from its outer shell to have full outer shell
And form a positive ion

Question 2

Group 1 ions charge

Answer 2

1+

Question 3

Group 2 ions charge

Answer 3

2+

Question 4

Group 3 ion charge

Answer 4

Cannot easily always be predicted except aluminium

Question 5

Aluminium ion charge

Answer 5

3+

Question 6

Transition metal ion charges

Answer 6

Can often form several positively charged ions
(Of different charges)

Question 7

Silver ion charge

Answer 7

+1

Question 8

Zinc ion charge

Answer 8

Zn2+

Question 9

When non metals react, what do they tend to do?

Answer 9

Gain an electron to form a non metal ion with a full outer shell
Becoming negatively charged ion
With name ending in -ide (ONLY if the reaction is with 1 other element)

Question 10

Group 5 elements nitrogen and phosphorus ion charges

Answer 10

3-

Question 11

Group 6 elements oxygen and sulfur ions charges

Answer 11

2-

Question 12

Halogen ions charges

Answer 12

1-

Question 13

Hydrogen ion

Answer 13

H⁺

Question 14

Ammonium ion

Answer 14

NH₄⁺

Question 15

Hydroxide ion

Answer 15

OH⁻

Question 16

Nitrate ion

Answer 16

NO₃⁻

Question 17

Carbonate ion

Answer 17

CO₃²⁻

Question 18

Sulfate ion

Answer 18

SO₄²⁻

Question 19

Polyatomic ions

Answer 19

Ions formed of more than 1 atom

Question 20

Polyatomic ions examples

Answer 20

Ammonium ion
Hydroxide ion
Carbonate ion
Nitrate ion
Sulfate ion
Phosphate ion

Question 21

Is the hydrogen ion polyatomic?

Answer 21

No because it only contains 1 atom (H)

Question 22

Diatomic molecules

Answer 22

A pair of atoms of the same element bonded together

Question 23

Examples of diatomic molecules

Answer 23

O₂ = oxygen
N₂ = nitrogen
Cl₂ = chlorine (and other halogens)

Question 24

Hydrochloric acid formula

Answer 24

HCl

Question 25

Sulphuric acid formula

Answer 25

H₂SO₄

Question 26

Nitric acid formula

Answer 26

HNO₃

Question 27

Ammonia formula (not an ion)

Answer 27

NH₃

Question 28

What changes in the ammonia formula?

Answer 28

When it is an ion it goes from
NH₃ To NH₄⁺

Question 29

Phosphate ion

Answer 29

PO₄³⁻

Question 30

Lead charge

Answer 30

Pb 2+

Question 31

Hydrogencarbonate ion

Answer 31

HCO₃⁻

Question 32

Sulphide

Answer 32

S²⁻

Question 33

Manganate ion

Answer 33

MnO₄⁻

Question 34

Chromate ion

Answer 34

CrO₄²⁻

Question 35

Dichromate ion

Answer 35

Cr₂O₇²⁻