Sigma chemistry teacher #sigmachemistry#chemistryexperiment High school chemistry 0:30 2 days ago 586 Далее Скачать
Experiment 7: Analysis of an Unknown Chloride John Jay General Chemistry 5:43 4 years ago 1 600 Далее Скачать
Does Salt & Sugar Make Instant Snow? (Science Experiment) PowerJoy 0:25 2 years ago 601 777 Далее Скачать
ANU CHEM1201 Experiment 7: Synthesis of aspirin and paracetamol ANU First Year Chemistry 5:14 4 years ago 3 095 Далее Скачать
