Fire is a chemical reaction that converts a fuel and oxygen into carbon dioxide and water. It is an exothermic reaction, in other words, one that produces heat. It is an exothermic reaction, in ...

2023年2月14日 · A train derailed and caught fire in eastern Ohio, releasing hazardous chemicals into the air, soil and water – and raising concerns about health effects for residents

2023年2月15日 · A long freight train carrying hazardous chemicals partially derailed and set fire near East Palestine, Ohio, on 3 February. It released hazardous chemicals into the …

2020年8月5日 · A massive blast on 4 August has caused widespread damage in the port area of the city of Beirut in Lebanon, with 100 people reported dead and 4000 injured.

1993年3月20日 · A novel chemical theory for ball lightning has been proposed by a British scientist. He claims the theory explains two of the phenomenon's most puzzling characteristics …

2023年7月10日 · In 1862, a chemist nodded off in front of a fire and began to dream. August Kekulé had been pondering the most pressing question in his field at the time: what was the …

2015年1月9日 · A few small studies have suggested the milky white fluid comes from Skene glands – tiny structures that drain into the urethra. Some in the medical community believe …

The wetland habitats they call home are packed with blue-green algae, which despite their name are actually red or orange in colour due to a chemical known as beta carotene. This chemical …

2024年5月22日 · Chemistry Mysterious element promethium finally reveals its chemical properties. The highly unstable radioactive element promethium is hard to study in the lab, but …

1995年11月18日 · Worryingly, the phosphorus bombs are just a tiny fraction of the 1.15 million tons (1.17 million tonnes) of conventional and chemical weapons known to have been dumped …