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Chemistry > Ionic Bonding - TN > Flashcards

Ionic Bonding - TN Flashcards

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1
Q

Properties of Ionic Compounds

A

Solid
Crystalline
3D Lattice structure
High melting and boiling points
Good conductor of electricity (when in an aqueous solution)
Soluble in water

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2
Q

What are all salts called

A

Ionic Compounds

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3
Q

Why are ionic compounds soluble in water (Eg NaCl)

A

Hydrogen = more positive
Oxygen = more negative
so the positive atoms will be attracted to the negative oxygen and the negative atoms will be attracted to the positive hydrogen
This breaks it apart as the H2O bonds are stronger

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4
Q

How do you know which Element to put on the left in molecular formulae

A

The element on the left is always positive

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5
Q

Charge of Manganese (Mn)

A

Mn4+

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6
Q

Charge of Zinc (Zn)

A

Zn2+

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7
Q

Charge of Silver (Ag)

A

Ag+

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8
Q

Charge of Copper (Cu)

A

Cu2+

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9
Q

Charge of Lead (Pb)

A

Pb2+

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10
Q

Charge of Iron (Fe)

A

commonly Fe2+ (or 3+)

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11
Q

What is Ionic Bonding

A

the strong electrostatic force of attraction between oppositely charged ions

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12
Q

Structure of an Ionic Compound

A

Giant Ionic Lattice

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13
Q

What is a giant ionic lattice

A

Oppositely charged ions held in a regular 3D lattice by electrostatic attraction

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14
Q

How do you know how strong the bond is in ionic bonding

A

By Multiplying the ionic charges together. The higher the number the stronger the bond

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15
Q

What is Ionic Bonding

A

The electrostatic force of attraction between oppositely charged ions

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16
Q

why do ionic bonds have really high melt and boil points

A

because they have a giant ionic lattice which have very strong forces of attraction

17
Q

do ionic compounds conduct electricity

A

only when molten or in an aqueous solution because then the ions are free to move

18
Q

what is the charge of Hydroxide

A

-

19
Q

what is the charge of ammonium

A

+

20
Q

what is the charge of carbonate

A

2-

21
Q

what is the charge of nitrate

A

-

22
Q

what is the charge of sulphate

A

2-

23
Q

How strong is the attraction in all ionic bonds so therefore how high or low is their melting point

A

very strong
high melting point

24
Q

how is the force of attraction (and therefore melting point) affected by the charge of ions in an ionic compound

A

-higher charges have higher melting points because the attraction between particles is even stronger

25
Q

can ionic substances conduct electricity

A

only whenliquid/dissolved because then the ions can move freely

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