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1
Q

De quoi est composé un atome
(3)

A
  • nucléons A = protons Z + neutrons N
  • électrons ne-
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2
Q

L’atome est combien de fois + grand que son noyau ?
(puissance)

A

10 exposant 5

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3
Q

Cl- + Ag+ = précipité

A

Blanc

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4
Q

Cu- + Ho- = précipité

A

Bleu

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5
Q

Fe2+ + Ho- = précipité

A

Vert

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6
Q

Fe3+ + Ho- = précipité

A

Rouille

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7
Q

Atome - électrons =

A

Cations +

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8
Q

Atome + électrons =

A

Anions -

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9
Q

Formule vitesse

A

v=d/t
vitesse =distance/temps

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10
Q

Distance Terre-Soleil

A

150 000 000 Km = 1 unité astrologique

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11
Q

Interaction

A

action réciproque entre deux objets

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12
Q

Force gravitationnelle

A

F = G x Ma x Mb/ d2

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13
Q

Formule poids Newton

A

P= m x g

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14
Q

Pour tracer un vecteur il faut trouver :

A
  • sa direction
  • son sens
  • son point d’application
  • sa longueur
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15
Q

Acide

A

0 (gauche)

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16
Q

Neutre

A

7 ( milieu)

17
Q

Basique

A

14 (droite)