Nacl sodium chloride if the metal has more than one possible charge with the stock method you must indicate which ion using the charge in roman numerals ie. For type i and type ii compounds, first list the metal then the nonmetal. Naming ionic compounds practice worksheet ionic compounds formation and naming. A chemical nomenclature is a set of rules for creating a system of names nomenclature for chemicals. Naming compounds flow chart metal and nonmetal is an ionic bond. In an ionic compound, the net ionic charge is zero 2. Binary molecular compounds can be recognized because they contain only two elements that are both nonmetals or a metalloid with a. Second task in organic chemistry naming is to select the parent chain. Rules for naming compounds 2010 creighton university. Note, we did not write monosulfur because of this rule.
Writing formulas of compounds using the table of oxidation numbers table 1, it is not difficult to write the formula of a chemical compound. Rules for naming compounds rockford public schools. Then, use the correct formula writing rules to write the correct chemical formulas for each compound. Nonmetals are those compounds to the right of the bold zigzag line see periodic table attached the rules for naming binary compounds are then as follows. Write the positive ion, with its charge, then the negative ion, with its charge. H2o2, n2h4, no, no2, co and pf5 romans numerals can be used but often fail to distinguish between some molecular compounds. Naming chemical compounds correctly is of paramount importance. Naming compounds there are 2 main types of binary compound. Acids have one or more hydrogens bound to an anion.
Chemical nomenclature simple english wikipedia, the free. Ionic compounds an ionic compound is composed of a cation and an anion. Ionic or covalent chemical formula 1 copper ii chlorite 2 sodium hydroxide 3 nitrogen dioxide. Determine if the compound is binary covalent molecular or ionic. You should be able to provide the name if given the chemical formula and be able to provide the chemical formula if given the name. They set the pattern for the polyatomic ions formed by elements beneath them in the periodic table. These compounds are represented by formulas that use the element symbols and subscripts to indicate how many of each element is present in the compound. All true binary compounds contain only two elements.
Ionic bonds bonding between a metal and nonmetal or the bond between a positive ion and a negative ion forming a binary compound. Learning how to name chemical compounds may at first seem to be a little overwhelming. Chemical nomenclature is at least as old as the pseudoscience of alchemy, which was able to recognise a limited number of reproducible materials. Although these rules provide unambiguous text equivalents for the great majority of sub. A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. If first atom is a single atom then prefix mono is omitted. The total oxidation number of the first, or positive, part of the compound must be equal but opposite. Nomenclature of ionic compounds from ions knowing the nomenclature rules for ions, we can begin the naming of ionic compounds. Rules for naming binary ionic compoundsrevised 12008. The naming of chemical compounds learning how to name chemical compounds may at first seem to be a little overwhelming. Use information about the compound formulae to unlock the grid. The rules for writing formulas for ionic compounds when metal and nonmetal ions form ionic bonds, their total electrical charges must balance each other exactly as in, add up to zero. If we consider the above example, carboxylic acid should be given more preference than hydroxyl group according to iupac nomenclature for organic compounds. Naming chemical compounds answers name the following ionic compounds.
Chemical nomenclature for chemistry practice problems and video lessons visit. The system used most often around the world today is the one created and developed by the international union of pure and applied chemistry iupac. Chemical compounds are formed when elements are joined by chemical bonds. Binary compounds containing a metal and a nonmetal ionic compounds. This is done so that everyone uses the same name for a chemical. Dont use mono for first name, but always for second name. Formulas and names of binary metalnonmetal compounds. When you began chemistry class this year, you probably already knew that the chemical formula for car bon dioxide was co2. The chemical nomenclature used by chemical abstracts service cas has developed in parallel and generally in accordance with the rules published by the international union of pure and applied chemistry iupac. Ionic compounds are compounds composed of ions, charged particles that. Hence chemical name of the compound is 4hydroxybutanoic acid. Binary covalent compounds will contain only two types of nonmetal elements.
Explain that a covalent compound consists of two different nonmetal. Naming metalnonmetal compounds if one of the two compounds is a metal, then the naming convention changes a bit. Atoms gain, lose or share electrons with other atoms to be come. Prefixes are used to specify the number of each atom present. This video explains how to use a chemical name to write the formula for that compound. This and the following section describe the rules for naming simple covalent compounds, beginning with inorganic compounds and then turning to simple organic compounds that contain only carbon and hydrogen.
Using the stock method, a roman numeral is used after the metal to indicate which ion is using the charge. Go through the check list and mark each row as b, d, or a based on your level of understanding. Ionic compounds are composed of metals and nonmetals. The nomenclature used most frequently worldwide is the one created and developed by the international union of pure and applied chemistry iupac the iupacs rules for naming organic and inorganic compounds are contained in two publications, known as the blue book and the red book, respectively. Classifying a compound is not an easy task, but for the. Naming alkenes, iupac nomenclature practice, substituent, e z system, cycloalkenes organic chemistry duration. No2 is nitrogeniv oxide and n2o4 is nitrogeniv oxide. We divide the compounds into two main types binary compounds and ternary compounds. Covalent compounds classifying compounds the system for naming an ionic compound is different from that for naming a covalent compound, so before a compound can be named, it must be classified as ionic or covalent. Compounds are formed from two or more different atoms bonded together.
Since we use different methods in naming binary covalent. Name the positive ion first, then the negative ion. Atoms gain, lose or share electrons with other atoms to be come chemically stable have 8 valence electrons. Compounds structure and naming compounds ionic made of ions composed of a metal left side and a nonmetal right side. In order to write a correct formula, you must know the ion charges of all the atoms involved. Nacl is sodium chloride, li 2 o is lithium oxide, kbr is potassium bromide, mgi 2 is magnesium iodide, sodium nitride is na 3 n, calcium bromide is cabr 2. The chemical formulas of many molecules however, cannot be determined by using valencies. Chemistry 16 naming compounds packet 6 worksheets pdf. Write the symbol and charge of the cation first positive ion. Binary compounds between two nonmetals molecular compounds 1.
Atoms of elements are not chemically stable until they have 8 valence electrons octet rule. There is one important rule that must be remembered. Knowing these rules and given a structural formula, one should be. The pdf comes with two options for printing, based on how printers may feed the paper for doublesided. Chemical reaction shown by balanced chemical equation burning natural gas. Nano3 sodium nitrate na2so4 sodium sulfate cacl2 calcium chloride k3po4 potassium phosphate. Chemical compounds an atom consist of a positively charged nucleus protons and neutrons and orbiting electrons. The iupac nomenclature system is a set of logical rules devised and used by organic chemists to circumvent problems caused by arbitrary nomenclature. Page i9 chemical nomenclature and formula writing chemical nomenclature and formula writing chemical nomenclature is the system that chemists use to identify and name compounds. These bonds are so strong that the compound behaves like a single substance. How to name organic compounds using iupac rules youtube. This foldable is perfect for a high school chemistry class, and helps kids remember all the rules of naming compounds.
Each of these three has its own rules that cannot be mixed and matched. Compound ending in ate use information about some compounds containing oxygen to unlock the grid. Nh3 contains l atom of nitrogen and 3 atoms of hydrogen. The metal cation is written first, the anion is written second and gets a name change to end in ide. Metal and nonmetal 2 nonmetals 3 or more elements polyatomic compound covalent compound ionic compound use greek prefixes put prefixes in front of element names to tell how many atoms are there. Naming and indexing of chemical substances for chemical abstracts. Compounds have their own properties that are unique from the elements they are made of. As with ionic compounds, the system for naming covalent compounds enables chemists to write the molecular formula from the name and vice versa. In an ionic compound, the metal cation is named first, then the nonmetal anion is named, but the ending is changed to ide. Naming and indexing of chemical substances for chemical. The main trick to writing formulas from the names is to recall. Nacl, sodium chloride the name of the nonmetal has ide added ie.
How are the chemical formula and name of a molecular compound related. A compound is a type of molecule with more than one element. First of all, decide if the compound is ionic, covalentmolecular or an acid. Chemistry naming ionic compounds describe the rules for naming covalent compounds. Binary molecular compounds contain two nonmetallic elements. Naming acids and bases acid names are based on the anion they form when dissolved in water. While there are many thousands of different chemical compounds there is a very definite system of nomenclature whereby we can name or write chemical formulas for most compounds. The system used most often around the world today is the one created and developed by the international union of pure and applied chemistry iupac the iupacs rules for naming chemical compounds are written in a series. Singleatom negative ions end in ide, so binary compounds always have this ending. Ionic compounds involve a cation either fixed or variable charge combining with an anion. Collaborate with your group members to write a list of rules for recognizing and naming binary molecular compounds from their chemical formulas. Mar, 2015 naming alkenes, iupac nomenclature practice, substituent, e z system, cycloalkenes organic chemistry duration. More complex naming rules see below for some of the more complex naming rules.
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