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Chemistry > bonding, structure and nanoparticles > Flashcards

bonding, structure and nanoparticles Flashcards

1
Q

What are the three types of Bonding?

A

1) ionic
2) Covalent
3) metallic

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2
Q

What occurs during ionic bonding?

A

Metal and Non Metal

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3
Q

Where do metallic bonds occur?

A

metal and metal

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4
Q

Where do covalent bonds occur?

A

non metal and non metal

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5
Q

What 4 Properties of Ionic Bonding

A

Can conduct electricity when molten
Soluble in water
High melting and boiling point
giant lattice

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6
Q

What are 5 Properties of Covalent Bonding

A

Low melting and boiling points
Do not conduct electricity
Insoluble in water
easy to break
weak van der waal force between molecules

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7
Q

What are 4 Properties of Metallic

A

High melting points
Conduct electricity
Mallaeble
Ductile

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8
Q

What is an alloy?

A

An alloy is a mixture of two or more elements , at least which one of it is a metal

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9
Q

Give 3 Examples of Giant Covalent Structures

A

Graphite
Graphene
Diamond

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10
Q

What are allotropes

A

Different forms of the same element are called allotropes

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11
Q

Melting point of Diamond

A

High

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12
Q

Does diamond conduct electricity

A

no

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13
Q

Strength of Diamond

A

Hard

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14
Q

Use of Diamonds

A

Cutting tools

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15
Q

Structure of Graphite

A

Carbon atoms are arranged in hexagons

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16
Q

Melting point of Graphite

A

High

17
Q

Strength of Graphite

A

Soft

18
Q

Use of Graphite

A

Pencil Leads

19
Q

Melting Point of Graphene

A

High

20
Q

Does Graphene conduct electricity

A

Yes

21
Q

Uses of Nanoparticles?

A

1) provide better skin coverage
2)Gives more effective protection against the ultraviolet radiation from the sun

22
Q

Risks of Nano Particles

A

1) Breathing Nano Particles may cause inflammation of lungs
2) Can Cause Cell Damage

23
Q

Size of Nanoparticles

A

1-100 nm

24
Q

Example of Ionic Bonding

A

Sodium Chloride

25
Q

What does Nm stand for

A

Nanometer

26
Q

Examples of covalent Bonding

A

Water( Hydrogen and Oxygen)

Chemistry (7 decks)

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