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Mercury is a silvery-white, liquid metal that is the only metal that is liquid at standard temperature and pressure. It has the highest density and electrical conductivity of any element, and is used in various applications such as thermometers, batteries, and dental amalgams.
Chongqing is a municipality in southwest China, known for its hilly terrain, hot climate and diverse ethnic groups. It has a rich history as a former capital of China and a wartime base, and a modern economy based on trade, finance and tourism.
Alzheimer's disease is a neurodegenerative disease that causes dementia and affects memory, language, and other cognitive functions. Learn about the signs, stages, risk factors, diagnosis, and treatment of this condition that affects 50 million people worldwide.