PPT-Alkali Metals

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 . Carbonates, Oxides and Hydroxides and their reaction with ACIDS. What is an indicator?. An . indicator. is a chemical that turns a different colour depending on whether it is added to an acid or an alkali.. 1. Mild irritation. 2. Complete destruction of the ocular surface epithelium and corneal . opacification. , loss of vision and rarely loss of the eye.. Offendings. :. 1. Solid. 2. Liquid. 3. Powder. 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. RHYOLITES, LATITE, TRACHYTE AND GLASSY EXTRUSIVE ROCKS. 2. IUGS Extrusive Igneous Rock Chart. 3. Silica Content Classification. 4. Naming aphanitic rocks. In naming aphanetic extrusive rocks, the name is often based only on a few phenocrysts. This is why a mafic name prefix is often used, for example hypersthene andesite. A better name is hypersthene phenoandesite.. is . a . substance . with a pH of . __________ ________7. It will turn . universal indicator red if they are . ___________, . and orange or yellow if . it is weak. . Acids . often taste . _________ . for . Biofuel Production. Dr.. Chenyu Du. University of Huddersfield. University of Nottingham. 27. th. August, 2015. University of . Huddersfield. 2. Huddersfield. Manchester. Nottingham. University of . a pH value tells us how much H. +. is in a solution. It can be defined by: pH = - log[H. +. ] (log is to base 10). . . (Also note, square brackets are used to denote concentration values); For example: pH = -log[10. Sean Bresler, . Joonbum. Park, Michael Heaven. ISMS 2017. Motivation. Diode Pumped Alkali Lasers (DPAL) . –. high-powers, excellent beam quality. . Need fast n. 2. P. 3/2. . n. 2. P. 1/2. transfer. Periodic Table. Periodicity:. regular variations (or patterns) of properties with increasing atomic weight. Both chemical and physical properties vary in a periodic (repeating pattern).. Group:. vertical column of elements (“family”). 2: Classes of Amorphous Materials. Juejun (JJ) Hu. hujuejun@mit.edu. 1. After-class reading list. Fundamentals of Inorganic . Glasses. Ch. 1 & 5. Introduction to Glass Science and . Technology. Ch. 5. Getter Sources vs. Metallic Evaporation Sources. Charlie Sinclair. Cornell University (ret.). 6/24/2012. UChicago Photocathode Workshop. 1. Alkali (Na, K, . Rb. , Cs) Characteristics. Low melting temperature. Properties of Metals. Worksheet .  Metals. ¾ of all known elements. Solid at room temp (NOT Mercury). Low IE = give up electrons. Metallic bonds. Delocalization. Malleable, ductile. Alkali Metals. Group I metals Trends Melting and Boiling points? Densities Reactivity… Alkali Metal What is the trend in density? The alkali metals generally become more dense going down the group, but the trend is not perfect because potassium is less dense than sodium.