Formula writing and nomenclature

Want chemistry games, drills, tests and more? Condensed Structural Formula Chemistry Tutorial Key Concepts A molecular formula tells us how many atoms of each element make up the molecule. A Lewis Structure electron dot diagram shows us how the bonding and non-bonding valence electrons are arranged around the atoms.

Formula writing and nomenclature

Phosphate ion PO Pattern 1: For instance, if you know nitrate is NO3-,then nitrite is NO If you know phosphate is PO,then you know phosphite is PO You can also use the prefixes hypo- and per- with the chlorate series.

Hypochlorite is a double whammy: You can also substitute the other halogens for Cl and make additional sets of the series.

Nomenclature & Etymology

The -ates with charges less than negative 1 that is, ions with charges of -2, -3, etc. HCO3-is called either the bicarbonate ion or the hydrogen carbonate ion. These are named hydrogen phosphate and dihydrogen phosphate, respectively.

That means you need to see the naming acids rules. The following periodic table will also come in handy. Working backward from the halogens, or 7A family, the oxidation states are most commonly -1, while the 6A family is -2, and the 5A family is Naming acids is extremely easy if you know your polyatomic ions.

There are three rules to follow: HCl is hydrochloric acid; H2S is hydrosulfuric acid. When you see an acid name beginning with hydro- think: HCN is an exception since it is a polyatomic ion without oxygen, so it is named hydrocyanic acid. If the acid has an -ate polyatomic ion after the H, that makes it an -ic acid.

H2SO4 is sulfuric acid. When the acid has an -ite polyatomic ion after the H, that makes it an -ous acid. H2SO3 is sulfurous acid.The formula will start with a C followed by H’s. Most of the organic carbons you will encounter will be either hydrocarbons or alcohols, and luckily for you, these are the simplest of all to name.

Learn the list of prefixes in the table following this section: they correspond to the number of .

Circumference of an Ellipse

Naming ions and chemical compounds Worksheet #1 Chapter 5 Naming and Writing formulas for Ionic Compounds 1. How do ions form? Worksheet #2 2. Write the electron configuration for the following atoms and their ions.

Write the formula for the following binary molecular compounds: 1. Heptachlorine dioxide 2.

formula writing and nomenclature

Trisulfur octaoxide 3. A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

These are limited to a single typographic line of symbols, which may include.

formula writing and nomenclature

Naming of Astronomical Objects. Celestial nomenclature has long been a controversial topic.

ANSWERS: Formula writing and nomenclature of inorganic compounds 1. Determine the oxidation number of S in each of the following compounds: a) Na2S2O3 ans. a) +2 b) H2SO3 b) +4 c) SO2 c) +4 d) K2S2O4 d) +3 e) Al2S3 e) -2 f) BaS2O8 f) +7 2. History of Science. A few cultural facts about the evolution of scientific nomenclature and scientific notations. Mathematics, chemistry, etc. The joke works better in writing, because of the spelling of Hiro. Also, the joke would confuse anyone new to the domain by conflating the terms just as we’re establishing differentiation.

At its inaugural meeting in in Rome, the IAU standardized the constellation names and recently IAU Committees or Working Groups have certified the names of astronomical objects and features.

In the following links you can find further information on how . Nomenclature and Formula Writing Ionic Compounds (metal + nonmetal) Binary Compounds (two elements only) - write the name of the metal (positively charged) - then write the name of the nonmetal using the ide ending.

Organic Nomenclature - Alkanes. Other modules in this series: Nomenclature of Alkenes and Alkynes; Substitutional Organic Functional Groups. Special thanks to Vicki Winterton for providing the outline for this learning module.

Naming Chemical Compounds & Writing Chemical Formulas