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Chemistry 3.1.1: Periodicity > Bonding > Flashcards

Bonding Flashcards

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1
Q

What type of bonding decreases as we go from left to right?

A

Metallic bonding

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2
Q

What do all metals have?

A

Have a giant metallic lattice structure

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3
Q

What are the electrons in the outer shell in a metal?

A

Delocalised
Gives positive metal centres

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4
Q

What are the fixed metals cations surrounded by?

A

Mobile, delocalised electrons

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5
Q

What is the purpose of the mobile, delocalised electrons?

A

Metals conduct both as solids and liquids

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6
Q

What is the purpose of the strong metallic bonds?

A

High temperatures are needed to provide the large amount of energy needed to overcome the electrostatic attraction between the cations and electrons

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7
Q

What type of boiling and melting points do metals tend to have?

A

High melting and boiling points

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8
Q

What are giant covalent lattices held by?

A

A network of strong covalent bonds

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9
Q

What type of energy is needed to overcome the strong covalent bonds?

A

Large amount of energy

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10
Q

Are giant covalent structures soluble or insoluble in solvents?

A

Insoluble

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11
Q

Are covalent bonds too strong to be broken by interactions with solvent molecules?

A

Yes

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12
Q

Why can’t giant covalent structures conduct electricity?

A

All the outer shell electrons are involved in covalent bonding

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13
Q

What two giant covalent structures can conduct electricity due to the delocalised electrons?

A

Graphite
Graphene

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14
Q

What is the melting and boiling point dependent on?

A

The bonding present in the structure of the element

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15
Q

Why do metals have high melting points?

A

Contain metallic bonding

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16
Q

Why do non-metal with giant covalent structures have high melting points?

A

The covalent bonds are strong require large amounts of energy to break

17
Q

Why do simple covalent molecules have low melting and boiling points?

A

They are held together by intermolecular forces, which are weaker
Require less energy to overcome

18
Q

Why do metals conduct electricity?

A

Their giant structures contain delocalised electrons, which are mobile

Chemistry 3.1.1: Periodicity (3 decks)

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