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sciencetestperiodic

blablabla

QuestionAnswer
pourcentage d'air est azote 78%
pourcentage d'air est oxygene 21
pourcentage d'air est argon .94
% d'air est co2 0.04
NaCl sel
toud l'eau hydrosphere
tout le gaz atmosphere
metal plus abondant au etat libre et majorite en canada cuivre, Lac superior
la capacite de reagir reactivite
l'aluminium est tres utile parce-qu'il est un bonne __ et il est tres ___ conducteur, malleable
les metaux de frappes sont aluminium, cuivre, or, fer, argent
pourquoi des beaucoup des annees avant qu'on a commence a utiler l'aluminium c'etait trop cher
premier a decouvrir aluminium et quand Humphry Davy 1807
premier pour cree um echantillon d'aluminium assez grande pour analyser Friedrich Wohler 1845
pourquoi aluminium pour soldats plus leger
decouvert 'oxyde d'aluminium Charles Martin Hall et Paul Louis Heroult 1886
minerai de quoi on extrait 'aluminium la bauxite
le canada produit beaucoup d'energie __ qui aide a raffiner plus d'aluminium a un cout plus hydroelectrique, faible
utilisation des metaux de frappe argent
les elements mendelieve a trouve mais sais pas gallium germanium
la table de mendelieve est la normale tourne
les electrons sont dans les couches
ligne horizontale periode
ligne verticale groupe
groupe 1 http://www.doccasagrande.net/Images/Periodic_Table.jpg metaux alcalins ragisent rapide avec eau et aire
diatomiques H2
groupe 2 http://www.doccasagrande.net/Images/Periodic_Table.jpg metaux alcalino-terreux tres reactifs
utilise en rayons x baryum
categorie au milieu metaux transitions
metaux precieuses or platine argent cuivre
note #1 lanthanides
note #2 actinides
a cote des metalloides chalogenes
dernier milieu halogenes
derner gaz nobles
est ce que groupe un est tres reactif? qui est plus ouias, chacun produit hydrogene, potassium est plus, descende
gropue 17 est tres reactif, augment
Created by: pickle131
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