di tri tetra penta hexa hepta octa
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Answers:acids always start with hydrogen unless its water, and these are derived from ions. derived from "ide" ion become "hydro"-"ic" acid. derived from "ate" ion become root+"ic" acid. derived from "ite" ion become root+"ous" acid. if it does not start with hydrogen and contains metal or ammonium, its an ionic compound and NO PREFIXES are used to name. simply name the formula by the ions in the compound. if it does not contain metal or ammonium, USE PREFIXES (mono, di, tri, tetra, penta, hexa,hepta, octa, nona, and deca) and name using prefixes. any specific one you need help on? ill give you an example HNO2= nitrous acid SiF4= Silicon tetraflouride hope this helps. my chemistry teacher gave us a flowchart that REALLY helped me out.
Answers:Naming a polygon by its number of sides requires that we know the appropriate Greek prefixes along with some rules for their use. For polygons with 3 through 20 sides, simply add "gon" to the prefixes at the left (although a trigon is more commonly called a triangle and a tetragon, a quadrilateral!). For more than 20 sides, we "construct" the name by using so-called combining prefixes: 3 = tri 4 = tetra 5 = penta 6 = hexa or sexa 7 = hepta 8 = octa 9 = nona or ennea 10 = deca 11 = undeca or hendeca 12 = dodeca 13 = triskaideca 14 = tetradeca 15 = pentadeca 16 = hexadeca 17 = heptadeca 18 = octadeca 19 = enneadeca 20 = icosa 3 - 99 SIDES To "construct" a name, we start with the prefix for the tens digit, follow it by "kai" (the Greek word for "and"), then follow it with the prefix for the units digit, and finally add "gon." Example: A 35-sided polygon is called a "triacontakaipentagon." 30 and 5 gon triaconta kai penta gon 100 - 999 SIDES For numbers from 100 to 999, we need one more combining prefix and another rule. To "construct" the name, we start with the prefix for the hundreds digit taken from the "Ones Digit" table above, follow it by "hecta," then proceed as before. Example: A 672-sided polygon is called a "hexahectaheptacontakaidigon 100 = hecta 600 70 and 2 gon hexa + hecta heptaconta kai di gon I think its enough. Satisfied!
Answers:Take the entire list that i know. 1. mono- 2. di- 3. tri- 4. tetra- 5. penta- 6. sexta- 7. septa- 8. octa- 9. nona- 10. deca-
Answers:I'll do my best! Get yourself comfortable...this is going to take a couple of minutes: (1) Binary ionic compounds. These are compounds that are made of two simple ions. NaCl and CuBr2 are good examples. These compounds are named in two parts: The cation (positive ion) is named first, followed by the anion (negative ion). This is the same order the formula is written in, so don't worry about having to switch it around. (1.1) Cation nomenclature There are two kinds of cations you might have to deal with: (1.1.1) Metals that have only one possible oxidation state. These include metals from groups I and II as well as aluminum, zinc, silver, and a handful of less common ones. The names of these ions are the same as the element's name. For example, the Na(+) ion is just called a sodium ion. The Al(3+) ion is called an aluminum ion. (1.1.2) Transition metals, which, in many cases, have more than one possible oxidation state. In these cases, you use a roman numeral in parentheses to indicate the charge of the cation. For example, iron can have either a +2 or +3 charge. It wouldn't do to simply refer to iron ions, since it's not clear whether we mean Fe(2+) or Fe(3+). So, we refer to Fe(2+) as iron(II) and Fe(3+) as iron(III). Another example: copper can have either a +1 or +2 oxidation state, so we can have copper(I) and copper(II) ions. An older method of naming indicates the oxidation state of the transition metal ion by adding -ic or -ous to the Latin form of the ion's name. For example, iron's Latin name is ferrum (from which we get the symbol Fe). In the older system, Fe(3+) would be called ferric, while Fe(2+) would be called ferrous. For copper (cuprum in Latin), Cu(+) would be called cuprous, while Cu(2+) is cupric. The -ic ending is always reserved for the higher of the oxidation states. That method is confusing, however, so unless your teacher insists on it I would stick to Roman numerals. (1.2) Anion nomenclature Anions are named by dropping the end of the element's name and adding -ide. For example, the Cl(-) ion is called chloride. O(2-) is an oxide ion, and As(3-) is an arsenide ion. You just have to practice learning where to chop off each element's name to add the -ide. Some examples: FeCl3 = iron(III) choride (or ferric chloride) Na2O = sodium oxide Ca3P2 = calcium phosphide CuS = cupper(II) sulfide (or cupric sulfide) (2) Tertiary ionic compounds Tertiary ionic compounds are ionic compounds that contain a polyatomic ion. These can be trickier to name than binary ionic compounds because you need to be able to recognize the common polyatomic ions. I recommend you learn them quickly, so this will make more sense to you. There is only one important polyatomic cation: the ammonium ion, NH4(+). Whenever you see the ammonium ion in a compound, its name does not change. Just call it ammonium __________, where the name of the anion goes in the blank. Polyatomic anions do not change their names when they are used in formulas. So, if NO3(-) is the nitrate ion, then KNO3 is called potassium nitrate. SO4(2-) is the sulfate ion, so Fe2(SO4)3 is iron(III) sulfate. NH4Cl would be called ammonium chloride. (3) Acids Acids are compounds that contain an ionizable hydrogen. In most cases, the hydrogen will be the first element written in the formula, so you're pretty safe in assuming that any formula that starts with H is an acid (even water, H2O, can be an acid when in the presence of a base). There are two main types of inorganic acids: binary acids and tertiary acids (also known as oxyacids). (3.1) Binary acids are made of hydrogen and one other element. They always have the form hydro_____ic acid, where the blank is filled by the stem of the anion. For example, HCl is called hydrochloric acid. HBr is hydrobromic acid, and H2S is hydrosulfuric acid. (3.2) Oxyacids are made of hydrogen and a polyatomic anion. They do NOT use the prefix hydro. If the polyatomic ion ends in -ate (such as nitrate, sulfate, carbonate, etc), then the acid's name has the form _______ic acid, where the blank is filled by the stem of the anion's name. For example, HNO3 (hydrogen nitrate) is called nitric acid. H2SO4 (hydrogen sulfate) is called sulfuric acid. Oxyacids whose anion ends in -ite (such as nitrite or sulfite) are given names with the form _______ous acid. For example, HNO2 (hydrogen nitrite) is nitrous acid. HClO2 (hydrogen chlorite) is chlorous acid. (4) Binary molecular compounds. Binary molecular compounds are covalently-bound compounds with two different elements in them. Examples would be SO2, XeF4, and NI3. These compounds have two-part names. The parts of the name are in the same order as the elements are listed in the formula, which in turn is generally listed in order of increasing electronegativity (EN). (4.1) Naming the first element. If the subscript of the first element is an understood 1, then you wouldn't change the element's name. For example, the first part of CO2's name is just "carbon". The first part of SO3's name is just "sulfur". If the subscript is 2 or higher, add a prefix to indicate the subscript. The prefixes are: 2 - di 3 - tri 4 - tetra 5 - penta 6 - hexa So, if you were naming the compound P4O10, you would begin with "tetraphosphorus". The compound N2Cl4 would begin with "dinitrogen". (4.2) The second element's name ALWAYS begins with a prefix, even if the subscript is an understood 1 (in which case the prefix is mono-). Putting it all together, SO3 becomes sulfur trioxide. CO is called carbon monoxide, while CO2 is carbon dioxide. XeF4 is xenon tetrafluoride, and N2Br4 is dinitrogen tetrabromide. So, I hope that's complete enough, and I hope it helps. Good luck to you!