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4e GR 2021 combustio

4e réaction

QuestionAnswer
Transformation chimique (définition) des molécules apparaissent et d'autres disparaissent (transformation ?)
A. de Lavoisier (citation) Rien ne se perd, rien ne se créer, tout se transforme
Les .............. sont les mêmes durant la réaction chimique Les atomes sont les mêmes durant la ...........................
Réactif espèce chimique qui disparait durant la réaction
Produit (de la réaction) espèce chimique qui apparait durant la réaction
équation bilan ... + ... -> ... + ... réactifs -> produits
Combustible (définition) Ce qui brûle ex : bois, essence, méthane (nom ?)
Comburant Ce qui fait brûler ex : dioxygène (nom ?)
Triangle du feu Combustible + Comburant + élément déclencheur (c'est le ?)
Elément déclencheur de la combustion flamme ; étincelle ; chaleur ; etc.
Created by: eraxit
 

 



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