The wonder material which could hold the key to near-limitless energy
A rare-earth barium copper oxide (REBCO) is now being used by an Oxfordshire-based company for its superconducting properties ...
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GCSE Chemistry / Science: Prepare a pure, dry sample of a soluble salt from an insoluble oxide
Stop adding the copper oxide when it's in excess - in other words when the black powder doesn't disappear anymore. This means there is no remaining sulfuric acid to react. The next step is ...
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Thermal decomposition
Copper carbonate is green and copper oxide is black. You can see a colour change from green to black during the reaction. The carbon dioxide produced can be detected using limewater, which turns ...