evaporation and crystallisation Flashcards

1
Q

whats evaporation used for

A

to separate a dissolved solid from a solvent/liquid
eg salt and water

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2
Q

what does evaporation involve

A

placing a mixture into an evaporating dish and heating gently until all solvent exaporates and the solid id left in the basin

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3
Q

draw the diagram of evaporation

A

google it

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4
Q

whats crystallisation similar to

A

evaporation

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5
Q

whats crystallisation used for

A

to separate a dissolved solid from a solvent

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6
Q

what does crystallisation involve

A

heating a solution to boil off most of solvent this creates a saturated solution then crystals form

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7
Q

whats a saturated solution

A

a solution where no more solid can dissolve at that temperate

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8
Q

whats the process of crysallisation

A

Crystallisation is the process of forming crystals from a solution and it is carried out by heating a solution in an evaporating basin which is then allowed to cool. Crystals form on cooling.

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