- Sodium carbonate
- 2 glass
- Phenolphthalein indicator
- Ferric salt
- Ammonium thio cynate OR Pottasium thio cynate .
- Coat sodium carbonate to the bottom of a glass.
- Fill the second glass half full of water. Add 10 drops of phenolphthalein indicator solution to the glass.
- To change water into blood , pour the water into the glass containing the sodium carbonate.
- Stir well the water will change from clear to red.
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