The table shows some mixtures and methods of separation.
Identify the best method of separation for each mixture.
| Separation | Chromatography | Simple distillation | Filtration | Fractional distillation |
|---|---|---|---|---|
| P: yellow dye from a mixture of food dyes | ||||
| Q: propanone from a mixture of propanone and water | ||||
| R: clay from a mixture of clay and water | ||||
| S: pure water from sea water |
Which of the mixtures PPP, QQQ, R R\,R or S S\,S contains an insoluble solid?
Pure dry crystals of copper(II) sulfate can be obtained from copper(II) sulfate solution by crystallisation.
The following steps describe the method, but they are in the wrong order:
Show the correct sequence of steps by writing the letters in the empty boxes below. One letter has been filled in for you:
AEAAA \boxed{\phantom{\text{A}}} \quad \boxed{\text{E}} \quad \boxed{\phantom{\text{A}}} \quad \boxed{\phantom{\text{A}}} \quad \boxed{\phantom{\text{A}}} AEAAA
