The list shows some techniques used to separate mixtures.
Complete the table to show the best method of obtaining each substance from the mixture. In each case, choose one of the letters A, B, C, D or E. Each letter may be used once, more than once, or not at all.
| Substance | Mixture | Letter |
|---|---|---|
| sand | sand and water | |
| hydrated copper(II) sulfate crystals | aqueous copper(II) sulfate | |
| red food dye | a mixture of food dyes | |
| propanone | a mixture of propanone and water |
Elements, compounds, and mixtures can be represented by particle diagrams. The boxes below represent the substances present in three different containers.
Classify the contents of each box as a compound, an element, or a mixture.
