Observations:
- Colour/Heat change
- Turned to fine powder
- Spitting/Fizzing
- Condensation on tube at first
Explanation:
- Condensation due to cold boiling tube + water produced by burning of gas
- Fizzing - carbonates produce CO2
- Turned from green to black - new substance formed
CuCO3(s) -> CO2(g) + CuO(s) - copper carbonate -> carbon dioxide + copper oxide
A THERMAL DECOMPOSITION - MOST CARBONATES WILL DO THIS
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