Ключевые слова: chemical, chemicals, chemist, chemistry, college, colleges, cure, danger, dangerous, drug, drugs, education, equipment, exam, examination, experiment, experimentation, experimenting, gear, grade, harardous, hazard, high, industrial, industry, kit, lab, laboratories, laboratory, learn, learning, pharmaceuticals, poison, poisonous, reaction, research, researcher, researching, school, schools, science, scientific, teach, teacher, teaching, test, tube,