Gunpowder was the first chemical explosive and propellant.火藥是最早出現(xiàn)的化學(xué)炸藥和推進(jìn)劑.Prior to the invention of gunpowder ,many incendiary bombs and burning devices had been used.在火藥發(fā)明之前，人們使用過(guò)許多燃燒彈和燃燒設(shè)備.The invention of gunpowder is usually attributed to Chinese alchemy.人們通常把火藥的發(fā)明歸因于中國(guó)的煉金術(shù).It is known to all that gunpowder is listed as one of the "Four Great Invention"of China.眾所周知，火藥被列為中國(guó)四大發(fā)明之一.The invention was made perhaps as early as in the Tang Dynasty.這項(xiàng)發(fā)明可能早在唐朝就已經(jīng)研制出來(lái)了Knowledge of gunpowder was spread throughout the the world as a result of the Mongol conquests in the 13th century.It was employed in warfare to some errect from at least the 14th century.由于13世紀(jì)蒙古人的征戰(zhàn)，有關(guān)火藥的知識(shí)被傳到全世界.最晚從14世紀(jì)開(kāi)始，火藥就已經(jīng)被應(yīng)用于戰(zhàn)爭(zhēng)并產(chǎn)生了一定影響.