Metode de separare Flashcards

1
Q

De ce depind metodele de separare ale substantelor?

A

-tipul amestecului
-natura si proprietatile substantelor componente

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2
Q

Ce metode de separare apartin amestecurile omogene?

A

Cristalizare si Distilare

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3
Q

Ce separa cristalizarea?

A

Separa o substanta solida dintr-un amestec omogen, sub forma de cristale

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4
Q

Ce separa distilarea?

A

doua sau mai multe lichide pe baza diferentei dintre punctele lor de fierbere

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5
Q

Ce punct de fierbere are apa?

A

100°

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6
Q

Ce punct de fierbere are alcoolul?

A

78°

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7
Q

Ce metode de separare apartin amestecurilor eterogene?

A

Decantare si Filtrare

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8
Q

Ce separa decantarea?

A

lichid-solid, lichid sau lichid-lichid

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9
Q

Pe baza cui separa decantarea?

A

pe baza diferentei de densitate

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10
Q

Ce separa filtrarea?

A

solid-lichid

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11
Q

Cu ce proprietate se face filtrarea?

A

Cu proprietatea ca solidul nu se dizolva in lichid si are o densitate mai mica decat a lichidului

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