- Created by: E456
- Created on: 17-04-17 11:28
HOW DO YOU IDENTIFY AN UNKNOWN SUBSTANCE?
- The procedure that a chemist might use will include the following:
- 1) note the colour
- 2) attempt to dissolve it in water, and note the colour of the solution
- 3) heat it, and see if any gases come off.
Solubility in water
- A soluble calcium compound could be the chloride or nitrate. A soluble carbonate could be sodium carbonate or potassium carbonate. Therefore if we mixed a solution of sodium carbonate with a solution of calcium nitrate, calcium carbonate would be precipitated out leaving sodium and…