"murdosaline" - 1 õppematerjal

"chemical element Neon"

it will take me about 2-3 minutes. I am going to talk about Neon's history extraction physical properties chemical properties uses health effect Neon is the chemical element that has the symbol Ne and atomic number 10. Neon was discovered in 1898 by British chemists William Ramsay (1852-1916) and Morris Travers (1872-1961). It occurs naturally in the atmosphere, but only in very small amounts. Extraction Neon can be obtained from air by fractional distillation(murdosaline destilatsioon). The first step in fractional distillation of air is to change a container of air to a liquid. The liquid air is then allowed to warm up. As the air warms, each element in air changes from a liquid back to a gas at a different temperature. The portion of air that changes back to a gas at -245.92°C is neon. Physical properties(omadused) Neon is a colorless, odorless(lõhnatu), tasteless gas. It changes from a gas to a liquid at -245