kartojimas jungimosi Flashcards

1
Q

aliuminis su deguonimi reakcja

A

4Al(k)+3O²(d)->2Al²O³(k)
vienine medž+vienine medz=sudetme
sidabriskai baltas metalas+bespalves dujos=pilkai balti milteliai

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2
Q

cinko ir deguonies reakcija (kaitinant cinka)

A

2Zn(k)+O²(k)->2ZnO(k)
sidabriskai baltas metalas->balti purus milteliai

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3
Q

sieros ir deguonies reakcija

A

S(k)+O²(d)->SO²(d)
siera+deguonis->sieros dioksidas
gelsva siera+rausva deguonis

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4
Q

vario sulfido reakcija (varis ir siera)

A

2Cu(k)+S(k)->Cu²S(k)
varis+siera->vario sulfidas
juodai zalsvos spalvos sudetine medz

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5
Q

sulfidai

A

labai svarbi zaliava metalams gauti

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6
Q

junginiai sulfidai

A

susidaro metalams reaguojant su siera
metalas+siera ->metalo sulfidas

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7
Q

metalu sulfidai

A

yra druskos, joniniai junginiai

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8
Q

ypac paplite mineralai

A

chalkopiritas
galenitas
cinoberis
kasiteritas
piritas
sfaleritas

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9
Q

aliuminio ir deguonies reakcijos savybes

A

metalo pavirsius apsitraukia pilka apnasa, susidaro tanki kaitrai, aplinkos poveikiui atspari aliuminio oksido plevele, vos atsiradusi lb blizga bet po kurio laiko blizgejimas susilpneja

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10
Q

cinko ir deguonies reakcijos savybes

A

labai is leto apsitraukia tokia pat oksido zno plevele ir neblizgq, susidaro apnasa, sauganti nuo tolesnio aplinkos poveikio ir po ja esanti cinka ir gelezi (ji nerudija)

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