Flame test
In this activity you have the opportunity to observe the colour that the flame takes when it is in contact with the salts
Materials:
- test tube and test tube rack
- watch glass
- bunsen burner
- a platinum or nichrome wire
- hydrochloric acid
- barium, calcium, potassium, lithium, copper, sodium and strontium salts
Steps:
1) Clean a platinum or nichrome wire. Dip it into concentrated hydrochloric acid, and hold it in a hot bunsen flame.
2) Moisten the clean wire by dipping it into the acid again. Then dip it into the salt, so it sticks to it.
3) Now hold it in the clear part of a blue bunsen flame, and observe the colour
| Pale green | Brick red | Crimson red | Lilac | Blue-Green | Orange-Brown | Crimson to scarlat |
| BaCl2 | CaCl2 | LiCl | KCl | CuCl2 | NaCl | SrCl2 |
Colour of CuSO4