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 ...

Physicists discover a copper-free high-temperature superconducting oxide Date: March 27, 2025 Source: National University of Singapore Summary: Engineers have designed and synthesized a ...

A colour change might take place when two substances react. It can also happen when a compound is broken down by heating it. This is called thermal decomposition. Watch this video to see how the ...

Detailed price information for Marimaca Copper Corp (MARI-T) from The Globe and Mail including charting and trades.