Class Hypothesis
Copper Sulphate can be dehydrated and rehydrated. This experiment will make the copper sulphate undergo a physical change.
Materials & Apparatus
Materials
| Apparatus
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Procedure
- Set up the spirit burner
- Using a spatula, put some copper sulphate crystals into the test tube. describe what it looks like on your paper.
- Light the spirit burner
- Observe what is happening to the copper sulphate
- When you see the change cap the spirit burner. Describe how the copper sulphate look now.
- Slowly add water to the material in the evaporation dish. Record your observation.
OBSERVATION OF COPPER SULPHATE CRYSTAL BEFORE HEATINGOBSERVATION OF COPPER SULPHATE CRYSTALS WHILE HEATINGOBSERVATION OF COPPER SULPHATE CRYSTALS AFTER HEATINGOBSERVATION OF COPPER SULPHATE CRYSTALS AFTER ADDING A FEW DROPS OF WATER | THE COPPER SULPHATE HAS A LIGHT BLUE COLOUR START TO HAVE WATER DROPLETS, TURNING GREENISH WHTE. COPPER SULPHATE TURNED GREYISH WHITE, LOOKS LIKE ASHES TURNS BACK TO BLUE COLOUR AGAIN. |
GUIDE QUESTION
- How many colour changes occur during the investigation?
- What do you think caused the colour changes? Explain.
- Did your results support your hypothesis? Explain.
- On a scale of 1 to 5, 5 being the best, rate your participation in the investigation and explain why.
- On a scale of 1 to 5, 5 being the best, rate your partner's participation in the investigation and explain why.
- How can you improve this experiment?
This is hydrated copper sulphate.