a Flashcards

1
Q

descobriment electro / proto

A

thomsom / goldstein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

com era l atom de Thomson

A

globalment neutre (+ i -)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

com es el model de rutherford

A

protons neutrons (chadwick) nucli i electrons en orbites fora

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

que es espectre d emissio i absorcio

A

quan absorbeix es quan electro salta de nivell i quan retorna d emissio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

nombre maxim electrons per capa

A

2n^2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

3 postulats model de bohr

A

1- gira en orbites circulars de diferent E
2- E de cada orbita es mes gran
3- si e- absorbeix E salta a nivell excitat i quan retorna emet radiacio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

com modifica bohr el model

A

al voltant del nucli diferents capes electroniques
1a capa circular resta eliptiques
cada capa es desdobla en subnivells (k-q)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

espectre emssio/absorcio

A

fons negre amb colors/fons color amb negre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

aplicacions radioactivitat

A

diagnostic malalties
agricultura
arqueologia
industria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

tipus enllaç

A

covalent ionic metalic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

caracteristicas enllaç ionic

A

solid dur fragil
temp fusio eb altes
conductors en aq
solubles en dissolvents polars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

tipus enllaç covalent

A

sub moleculars

cristalls atomics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

caracteristicas sub molecular

A

temp fusio eb baixes
solubles en dissolvents organics
no conductors
baixa densitat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

caracteristiques cristall atomic

A
solen ser solid
temp fusio eb altes
molt durs menys grafit
insolubles
no conductors
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

força intermolecular q es

A

determina prop fisicas

hi ha pont d hidrogen i força van der waals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

força intramolecular q es

A

uneix atoms quan

quan es trebquen fan canvia quimics

17
Q

pont d hidrogen q es

A

s uneix amb O,N,F i temp fusio eb alts

18
Q

força van der waals q es

A

es basa en dipols (+ i -)

19
Q

polaritat q es

A

polar: vectors diferents
apolar: vectors iguals

20
Q

caracteristicas enllaç metalic

A
solen ser solids
temp fusio eb alts
ductil i maleable
bon conductor
lluentor metalica
insoluble
\+ estabilitat + pressio