PPT-Unit 6: Writing and Naming Chemical Formulas

Chemistry I 20132014 Ions amp The Octet Rule Vocabulary Ion an atom or bonded group of atoms with a positive or negative charge Anion a negatively charged ion Cation a positively charged ion. Day 2. Working backwards: name to formula. It’s. . possible. . to. . determine. . a. . formula. . from. . a. . name. E.g. What is the formula of sodium oxide?. To get the answer, first write the valences:. Covalent Compounds. Warmup. – write out the answer. Identify these compounds as covalent or ionic. SiO. 2 . is _____. FeS. 2 . is _____. cobalt(III) chlorate is _______. H. 2. O is _______. An ionic bond is____. Ch. . 16. Covalent Compounds. Covalent bonds. form when atoms share . their valence electrons. .. Covalent compounds. are formed from 2 or more nonmetals.. Rules for Naming Covalent Compounds. 1. Prefixes are used to show how many atoms of each element are present in the compound . Do Now: from last years regents. Chemical Formulas. Tell . type. & . number. atoms in compound. Microscopic level: . Formula gives atom ratios. Macroscopic level: . Formula gives mole ratios. EXAMPLE. Get started. Imagine that Excel is open and you’re looking at the “Entertainment” section of a household expense budget.. Cell C6 in the worksheet is empty; the amount spent for CDs in February hasn’t been entered yet.. Multivalent & Polyatomic Ions. Multivalent Metals. Multi = multiple. Valent. = charge. Metal = specifically transition metals. . List all of the possible . valencies. for the following metals:. CHEMICAL NOMENCLATURE. Writing Formulas. Binary ionic compounds. Ternary ionic compounds. Binary molecular compounds. Acids. Ionic Compounds. Composed of oppositely charged ions. Positive ion is a . cation. Yewande Dayo . Student Pharmacist. Objectives. Perform calculations to reduce and enlarge formulas for pharmaceutical preparations stated in metric quantities. Perform calculations to reduce and enlarge formulas for pharmaceutical preparations stated in proportional parts. Covalent Compounds. Formed between two non-metals. Valence electrons are shared between atoms. Binary Covalent Compounds. Contain just two different types of non-metal elements. Some Different Rules. Naomi Hashimoto. University Wisconsin-River Falls. April, 2011. Word Production Models. CONCEPTUAL LAYER. PHONOLOGICAL LAYER. SYNTACTIC FEATURES. PHONOLOGICAL LEXEMES. PHONEMES. SEMANTIC FEATURES. SEMANTIC FEATURES. Jennie L. Borders. Periodic Table for Naming. Section 9.1 Regular Metals Review. The . regular. metals include Group . 1. (except H) and . 2. and . aluminum. .. When . naming. a compound that starts with a regular metal, . 10.1 . Reactions and . Equations. Evidence of Chemical Reactions. ..  . The process of which the atoms of one or more substances are rearranged to form different substances is called a . Chemical Reaction. Oxyanions. Oxyanions- negative ions containing oxygen.. These have the suffix “-ate” or “-ite”. “-ate” means it has more oxygen atoms bonded, “-ite” has less. For example. SO. 4. 2-. sulfate. I. onic compounds form between a metal and a nonmetal.. The metal forms a . cation. (+ ion) and the nonmetal forms an anion (-ion).. The . cation. is always named first and is the element name.. The anion is always named second – the root of the element name with an –ide ending..