Ключевые слова: abstract, acetylene, autogene, background, black, blaze, blazing, burn, burning, calcium, carbide, chemistry, circle, cold, danger, dangerous, design, detail, education, educative, element, energy, experiment, explosive, fiery, fire, flame, gas, glowing, heat, hot, ignite, inferno, isolated, light, love, nature, orange, red, school, science, scientific, symbol, traditional, tutorial, university, water, wavy, wild, yellow,