chapitre 2 Flashcards

1
Q

qu’est ce qui change la nature de l’élément

A

nombre de protons

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2
Q

que représente le nombre de masse?

A

nb de neutrons + nb de protons

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3
Q

si l’élément est neutre le nb de protons est égal au…

A

nombre d’électrons

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4
Q

c’est quoi un isotope

A

c’est un élément qui a le même nombre de PROTONS mais un nombre différent de NEUTRONS

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5
Q

que représente Cl-

A

un atome de chlore qui GAGNE un électron (aninon)

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6
Q

que représente Na+

A

un atome de sodium qui perd un électron (cation)

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7
Q

dans quel cas on doit ajouter un préfixe (nomenclature)

A

composés covalents

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8
Q

CN-

A

cyanure

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9
Q

OH-

A

hydroxyde

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10
Q

SCN-

A

thiocyanate

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11
Q

HS-

A

hydrogénosulfure

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12
Q

PO4 3-

A

phosphate

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13
Q

PO3 3-

A

phosphite

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14
Q

SO4 2-

A

sulfate

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15
Q

SO3 2-

A

sulfite

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16
Q

NO3 -

A

nitrate

17
Q

NO2 -

A

nitrite

18
Q

C2O4 2-

A

oxalate