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Chemistry > C4 > Flashcards

C4 Flashcards

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1
Q

what are ceramics?

A

inorganic non - metallic solids

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2
Q

what is a composite?

A

reinforcement and the matrix

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3
Q

what is a property of a material?

A

tensile,hardness,flexibility,elelectricial conductivity, thermal conductivity

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4
Q

one fact about giant covelant structure

A

no specific formula,high melting point,large molecule

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5
Q

what is a diamond structure

A

an allotrope of carbon

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6
Q

whats the functions of diamond structure

A

covalent bonds, hard,does not conduct electricity, high melting point

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7
Q

what is graphite

A

an alltrope of carbon

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8
Q

whats the properties of graphite

A

covalent bonds, soft, conducts electricity

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9
Q

what is graphene

A

a allotrope of carbon

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10
Q

what are the properties of graphene

A

conduct electricity, light but strong

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11
Q

what is fullerenes

A

molecules of carbon atoms that have hollow shapes

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12
Q

what is a spherical fullerenes

A

the 1st fullerene was spherical its formula of C60 a simple molecule

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13
Q

what is the uses of spherical fullerenes

A

catalysts, lubricants, delivering drugs

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14
Q

what is cylindrical fullernes

A

tiny diameter but very long carbon nanotubes

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15
Q

what are cylindrical fullerenes uses

A

electrical conductivity of them make it useful in electronics and nanotechnology

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16
Q

what are nanoparticles?

A

1-100nm long
10-1000 atpms

17
Q

what are fine particles

A

100-2500nm long
1000 25000 atoms

18
Q

uses of nanoparticles

A

catalysts medicine electronics cosmetics deodorants

19
Q

what are nanoparticles

A

high syrface to volume ratio that smaller amounts can be used for our desired purpose

20
Q

disadvantage of nanoparticles

A

we dont know the long term effect it has on human health

21
Q

what is a lca life cycle assessment

A

access every stage of a product lifetime to evaluate total enviromental costs

Chemistry (2 decks)

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