Photon+Avancement Flashcards

1
Q

Spectre de raies

A

Permet de caractériser une entité chimique

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2
Q

Radiations visibles

A

400 à 800 nm

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3
Q

Lambda

A

v×T
v vitesse de propagation
T période d’une onde

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4
Q

Energie s’exprime en

A

Joules

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5
Q

Un gaz à haute température émet un spectre

A

De raies

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6
Q

Rayonnement monochromatique caractérisé par

A

Longueur d’onde (vide ou air)

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7
Q

Vitesse de la lumière

A

3,00•10⁸m/s

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8
Q

Lambda (nu et c)

A

=c/nu
Lambda en m
c en m/s
nu en Hz

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9
Q

Constante de Planck (h)

A

6.63•10-³⁴ J•s

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10
Q

Énergie

A

=h×nu=h×c/lambda
énergie en J
h constante de planck
nu en Hz
c en m/s
lambda en m

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11
Q

1eV (électronvolt)

A

1,6•10-¹⁹ J

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12
Q

État fondamental

A

État stable de l’atome

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13
Q

Absorption d’un photon par un atome

A

∆E =|Ef-Ei|=Ephoton=h×nu=h×c/lambda
Ici : Ef>Ei

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14
Q

Émission d’un photon par un atome

A

∆E=|Ef-Ei|=Ephoton=h×nu=h×c/lambda
Ici : Ef<Ei

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15
Q

Quantité de matière n =

A

m/M ou C×V
n en mol
m en g
M en g/mol
C en mol/L
V en L

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16
Q

Avancement d’une réaction chimique

A

Grandeur exprimée en mole, notée x

17
Q

État initial

A

Avancement nul

18
Q

Infrarouges

A

> 800nm

19
Q

Ultraviolet

A

<400nm