有科學科功課唔識

我吾係好明白你所指"the powders of X and Y are mixed together" 係吾係MIX係水入面, 但我假設吾係先啦!

To seperate solid Y:
1. Mix solid x and y in the funnel. Solid X is soluble so you will find it in the beaker
underneath with the water. Solid y is not soluble so you will find it in the funnel.
The solid y is seperated.

To seperate solid x:
1. Pour the remaining solution ( solid x and the filtered water) into the beaker filled
with water.
2. Turn on the Bunsen burner and boiled it .
3. Boiled it until there is not any water left in the beaker. Because it turns into water
vapour. Then only solid x remains in the beaker.


As a result, you can seperate solid x and solid y.