资讯

To Conduct Demonstration: Display five 250mL beakers with 50mL of Fe(NCS)2+ solution. Reserve one as a reference. Add 0.1M Fe(NO3)3 solution to beaker #2. The color should become more intense as more ...
Footage shows a teacher demonstrating the 'Elephant toothpaste' experiment to his students. The instructor used a hydrogen peroxide solution and poured the substance into a small beaker containing ...