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Praxis
Nomenclature/Mole, Bonding, Geometry
Question | Answer |
---|---|
Anion? | Negatively charged atom. Produced when an atom gains an electron. Nonmetallic atoms tend to form anions because they exert a stronger pull on neighboring electron. |
Cation? | Positively charged atom. Produced when an atom loses on electron. Metals tend to hold their electron loosely and thus lose them more easily. |
Binary Compound? | Compound containing two elements. |
Ternary Compound? | Compound containing three elements. |
Metals? | Elements that gain electrons in chemical reactions. Become anions. |
Non-metals? | Elements that lose electrons in chemical reactions. Become Cations. |
How are Hydrogen-based acids named? | Prefix "hydro" followed by the root of the halogen and ending in the suffix "ic". |
What is an example of a Hydrogen based acid? | Hydrogen fluoride in solution is called Hydrofluoric acid (HF). Hydrogen chloride in solution is Hydrochloric acid (HCl). Hydrobromic acid (HBr). Hydroiodic acid (HI). |
What are Oxygen based acids? | Oxoacids or carboxylic acids. Contain Hydrogen, Oxygen & another element. |
How are Oxygen-based acids named? | Oxoanion with the suffic "ic" & adding acid. (NO3 - nitrate anion, combined with Hydrogen = Nitric Acid - HNO3). |
What are some common examples of Oxoanions? | Nitrate - NO3. Sulfate - SO4. Chlorate - ClO |
What is the Molecular Structure of salts? | Binary compound formed of a metal & non-metal. |
What is the Molecular Structure of Oxides? | Metal + oxygen. |
What is the Molecular Structure of Peroxides? | Oxides that contain one or more oxygen atoms than normal valence rules would predict. More Oxygen atoms than predictable. |
What is the Molecular Structure of acids? | Binary compounds - Hydrogen + non-metal in solution. Ternary compounds - Hydrogen + complex ion in solution. In reactions acids bond with an H ion. |
What is the Molecular Structure of Bases? | Ternary compound - metal + complex ion OH-. In reaction bases lose H ions. |
How do acids & bases react together? | Neutralization reactions because the two compounds cancel each other out & produce water. Neutralization reactions are often very important in many industrial & biological processes. |
Define IUPAC nomenclature? | International Union of Pure & Applied Chemistry. Standards for naming chemical compounds. |
What are compound common names? | Names applied to compounds before IUPAC rules were formulated and thus do not follow those standards. |
How is IUPAC nomenclature helpful? | Correct compound formula can be derived from proper name & vise-versa. Used as standard across the scientific community. |
What is the basis for nomenclature of organic compounds? | Naming depends on type of bonds between molecules. Depends on functional groups within compound. Describes bonding between atoms as rings &/or chains & identifies the type & location of functional groups. |
What do organic compound names consist of? | three parts - Root for largest chain or ring of Carbon atoms. Suffix for functional group(s). Names of other groups or elements present. |
What are Cyclic hydrocarbons? | Rings. |
What are the rules for IUPAC nomenclature of inorganic binary compounds? | Name of metal first + root of non-metal + suffix "ide". i.e. sodium chloride, aluminum bromide, potassium sulfide, sodium pentoxide. |
How are inorganic compounds named when no metal is present? | First element named is the left-most element on the periodic table. Greek prefix is added to element name indicating # of atoms of that element present. i.e. carbon monoxide, dinitrogen tetrachloride. triphosphorous pentafluoride, hydrogen dioxide. |