Межшкольный интеллектуальный химический марафон по теме "Галогенны" проводимый совместно с ПАО «Тольяттиазот»
презентация к уроку по английскому языку (9, 10, 11 класс)

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Chlorine Cl Iodine I Bromine Br Fluorine F Astatine At

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Chlorine Around 1630, chlorine gas was first synthesi z ed . I n 1774 Carl Wilhelm Scheele wrote a description of chlorine gas . In 18 10 by Sir Humphry Davy chemists suggested that the gas might be a n element . It was named from Ancient Greek : χλωρός, translit. khlôros , lit. 'pale green' based on its colour.

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Iodine The elemental form was discovered by the French chemist Bernard Courtois in 1811. It was named two years later by Joseph-Louis Gay-Lussac from this property, after the Greek ἰώδης "violet-coloured".

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Bromine The element was discovered by Carl Jacob Löwig (in 1825) and Antoine Jérôme Balard (in 1826), Its name was derived from the Ancient Greek βρῶμος ("stench"), referencing its sharp and disagreeable smell.

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Fluorine The element was discovered by French chemist Henri Moissan in 1886. It was named by Latin verb fluo meaning "flow".

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Astatine The first synthesis of the element was in 1940 by Dale R. Corson, Kenneth Ross MacKenzie, and Emilio G. Segrè. It was named the Greek astatos (ἄστατος), meaning "unstable".

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Astatine Symbol: At Address: number 85 Appearance: black , dark blue State of matter: solid crystals Character: astatic, radioactive Use: I’m dangerous.