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7e - Substances

Étudier pour quiz 1 - substances pures et mélages

QuestionAnswer
C'est quoi la chimie? Étude de la matière et ces changements
Que sont les trois états de la matiere? liquide, solide, gaz
C'est quoi la masse? Mesure la quantité de la matière qui est dans un objet.
C'est quoi le volume? La quantité d'espace que quelque chose occupe
Quelles particules sont les plus proches les unes les autre? solide
Quelles particules ont une disposition ordonnée? solides
Quelles sont les particules qui ont le plus d'énergie? gaz
Quelles sont les particules les moins serrées les unes contre les autres? gaz
Nomme un point important de la théorie particulaire Les particules sont toujours en mouvment
Est-ce qu'il y a toujours de l'espace entre les particules? Oui
Si on ajoute la chaleur, est-ce que les particules bougent plus lentement ou rapidement? rapidement
Que représente le H dans l'eau (H2O)? hydrogène
Que représente la Na dans le bicarbonate de soude (NAHCO3) le sodium
Un mélange a un ou plusieurs types de particules? un type de particules seulement.
Le jus d'orange est un mélange ou une substance pure? un mélange
Les solutions ont un mélange uniforme? vrai
Un mélange mécanique et une substance pure c'est la même chose? Faux - c'est un mélange hétérogène
Created by: MmeTracey
 

 



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