Chapitre 2 Molecule Flashcards

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1
Q

A quoi correspond un changement chimique

A

A une modification de la composition d’une substance

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2
Q

Définir l’énergie

A

Permet d’effectuer un travail

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3
Q

Quels sont les 4 principaux éléments du corps

A

C(arbonne)
O(xygene)
H(ydrogene)
N(azote)

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