Salt or metal oxide | Solid | Aqueous solution |
| Salt of Sodium, Calcium, Magnesium, Aluminium, zinc, Lead, ammonium | White | Colourless |
| Salt of Chloride, sulphate, nitrate, carbonate | White | Colourless |
| Salt of Copper(II).- | ||
| Copper(II) Carbonate | Green | – |
| Copper(II) sulphate, Copper(II) nitrate, Copper(II) chloride | Blue | Blue |
| Copper(II) oxide | Black | – |
| Salt of Iron (II): Iron(II) sulphate; Iron(II) nitrate; Iron(ID chloride | Green | Green |
| Salt of Iron (III): Iron(III) sulphate; Iron(III) nitrate; Iron(III) chloride | Brown | Brown |
| Zink oxide | Yellow when it is hot and white when it is cold. | – |
| Lead(II) oxide- | Brown when it is hot and yellow when it is cold. | – |
| Magnesium oxide, Aluminium oxide | White | Insoluble |
| Potassium oxide, Sodium oxide, Calcium oxide | White | Colourless |