Ion and formulae Flashcards

1
Q

When metals react, what do they tend to do?

A

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

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2
Q

Group 1 ions charge

A

1+

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3
Q

Group 2 ions charge

A

2+

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4
Q

Group 3 ion charge

A

Cannot easily always be predicted except aluminium

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5
Q

Aluminium ion charge

A

3+

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6
Q

Transition metal ion charges

A

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

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7
Q

Silver ion charge

A

+1

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8
Q

Zinc ion charge

A

Zn2+

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9
Q

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

A

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)

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10
Q

Group 5 elements nitrogen and phosphorus ion charges

A

3-

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11
Q

Group 6 elements oxygen and sulfur ions charges

A

2-

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12
Q

Halogen ions charges

A

1-

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13
Q

Hydrogen ion

A

H⁺

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14
Q

Ammonium ion

A

NH₄⁺

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15
Q

Hydroxide ion

A

OH⁻

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16
Q

Nitrate ion

17
Q

Carbonate ion

A

CO₃²⁻

18
Q

Sulfate ion

A

SO₄²⁻

19
Q

Polyatomic ions

A

Ions formed of more than 1 atom

20
Q

Polyatomic ions examples

A

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

21
Q

Is the hydrogen ion polyatomic?

A

No because it only contains 1 atom (H)

22
Q

Diatomic molecules

A

A pair of atoms of the same element bonded together

23
Q

Examples of diatomic molecules

A

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

24
Q

Hydrochloric acid formula

25
Sulphuric acid formula
H₂SO₄
26
Nitric acid formula
HNO₃
27
Ammonia formula (not an ion)
NH₃
28
What changes in the ammonia formula?
When it is an ion it goes from NH₃ To NH₄⁺
29
Phosphate ion
PO₄³⁻
30
Lead charge
Pb 2+
31
Hydrogencarbonate ion
HCO₃⁻
32
Sulphide
S²⁻
33
Manganate ion
MnO₄⁻
34
Chromate ion
CrO₄²⁻
35
Dichromate ion
Cr₂O₇²⁻