Question

Nyasa is checking different soil samples in the laboratory. Accidently,
iodine crystals get mixed with one of the soil sample. Now, she wants to
separate this mixture. Which method of separation should be used to
separate iodine crystals from the soil sample? Give reason for your
statement.

Answer 1

Answer:

Answer

(i) When Iodine crystals are heated, the van der Waals forces are easily overcome and the molecule breaks into the gas phase. They sublime and form a purple colored dense vapor.

(ii) When Iron nail (Ferrum) is dipped in Copper sulphate (CuSO

4

) there takes reaction between them and copper sulphate changes its color from blue to light green. This shows Iron is more reactive than Copper, it can replace Copper from CuSO

4

.

Explanation:

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Answer 2

Answer:

ya correct

..anser is correct