revision exam final Flashcards

1
Q

formule Erad

A

h x f ou E2-E1

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2
Q

C quoi VITR

A

V= 6a 2
I= 5 a 2
T=4 a 2
R= 3 a 2

c le spectre visible de lhydrogene ; balmer

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3
Q

differents spectre de lhydrogene:

A

-Lyman (uv)
-Balmer(visible)
-Paschen(infrarouge)
-Brackett (infrarouge)

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4
Q

lel (charge dun electron)

A

1,6022x10^-19 C

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5
Q

Constante Rh

A

2,18x10^-18 J

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6
Q

a0

A

5,292x0^-11 m

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7
Q

c

A

2,998x10^8 m/s

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8
Q

h

A

6,626x10^-34 J x s

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9
Q

Nombre davogadro

A

6,022x10^23 atomes

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10
Q

D

A

3,336x10^-30 c x m

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11
Q

solide ionique caracteristiques

A

-composes ioniques
-ions positifs et ions negatifs
-liaison ionique (entre cations et anions)
-liaison forte
-Dur; cassant; point de fusion eleve; mauvais conducteur de chaluer et delectricite

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12
Q

solides moleculaires caracteristiques

A

-corps simples; non-metaux (sauf C)
-composes covalents
-molecules
-liaisons faibles
-forces intermoleculaires: dispersion, dipole-dipole et hydrogene
-mou; point de fusion bas a moyen; mauvais conducteur de chaleur et delectricite

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13
Q

solides covalents

A

-metalloides et C
-qlq composes covalents
- atomes
-liaison covalente
-liaison forte
-dur : point de fusion eleve; mauvais conducteur (appart graphite)

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14
Q

metaux

A

-coeur datomes positif
-liaison metallique
-liaison moyenne a forte
-mou a dur: point de fusion moyen a eleve; bon conducteur de chaleur et delectricite

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15
Q

exception solide covalent qui reagit pas avec leau

A

SiO2

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16
Q

force dipole dipole

A

lorsque la molecule est covalente polaire

17
Q

force de dispersion

A

quand la molecule est covalente polaire et non-polaire

18
Q

une molecule peut former des liaisons hydrogenes avec leau seulement si..

A

-on retrouve F,O ou N
-dans les acides et bases amines ou on retrouve OH et NH

19
Q

metalloides

A

B, Si, Ge, As, Sb,Te

20
Q

elements ds la nature:

A

gaz: N2, O2, F2, Cl2
solide; P4, S8, I2
liquide: Br2

21
Q

Pour les metaux du bloc d et p

A

-compose ionique si NO du Me<= a 3
-compose covalent si NO du Me>3

22
Q
A