PPT-Halogens

Chemistry What are Halogens Halogens are a series of nonmetal elements located in group 7 of the periodic table The term halogen means salt former All halogens have seven electrons in their outermost. Larry D. Johnson Methods Branch, MD-44 Air Methods Research Division National Exposure Research Laboratory U.S. Environmental Protection Agency Research Triangle Park, North Carolina 27711 Presented A Group 7. Elements in the Halogen Group. Fluorine (F). Chlorine (. Cl. ). Bromine (Br). Iodine (I). Astatine (At). Group 7 Elements. Similar reactions to with other elements because they all gain one electron. . Physical Science. Elements and their Properties. At room temperature, most metals are . ____.. gases. liquids. radioactive. solids. The process by which solid iodine particles change directly to gas without first becoming a liquid is called . l When the waste oil hauler company comes to pick up a shipment of waste oil, it may run a test on the oil to check for contaminants. If the test results indicate “halogens” are pr Halogen displacement reactions. http://www.youtube.com/watch?v=Y06IoBUeVbw. Test for halide ions. http://www.youtube.com/watch?v=7F4JhrBWdY4. . Conc. Sulphuric acid and halides. http://www.youtube.com/watch?v=OoS3q1C8zts. Learning Outcomes. History of the idea of elements,. The contributions of the Greeks, Boyle, Davy and Moseley.. Greek Periodic Table. Robert Boyle. Element cannot be split up into simpler substances by chemical means. Michael Bailey & Marlena . Artis. Atomic Mass. Symbol. (Uranium). Atomic Number. The atomic number is the number of protons an atom has. The atomic mass is the atom’s mass often measured in AMUs (Atomic mass units) which weighs approximately 1/12 the mass of a carbon-12 atom. Elements in Group 1 are called . alkali metals. . lithium, sodium, potassium, rubidium, cesium, and francium . • Alkali metals are so named because they are metals that react with water to make alkaline solutions. . 7. elements?. All pupils will be able to (Baseline):. . Describe the trends in properties in Group 7. Most pupils will be able to (Further):. . Use the displacement reactions to prove the order of reactivity for the halogens is correct. Hydrocarbon ignited in a condition of excess oxygen will combust (oxidize). Forms carbon dioxide, energy and water. Combustion is an exothermic reaction (so the net reaction involves the net output of heat energy). Objective:. To know what phenol is. Success criteria:. Recognise phenol compounds. Recall . the reaction of phenol with bromine water. Compare the reactions of phenols to that of bromine. Explain the difference in reactivity between phenols and benzene. This week’s objective. : . Interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements. . What is the Periodic Table?. The Periodic Table is the arrangement of all the elements known to man into one table. This table arranges the elements based on their properties. .  . . Electronic Configuration of Hydrogen 1s. 1. Position of hydrogen in the periodic table: Position of hydrogen in periodic table is not justified because it resembles both alkali metals as well as halogens.. Dr. . Nouf. H. . Alotaibi. Group 17 elements, fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At), belong to halogen family. . Electron configurations ns. 2. np. 5. (n is the period number)..