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chemical bonds quiz
12/10/14 chemistry
| what is a chemical bond | an attractive force between atoms or ions that binds them together as a unit (ionic compound, molecule, metal) |
| why do chemical bonds form | bc 1.potential energy is lowered 2.stability of the system increases |
| what is ionic bonding | a bond between positively charged ions (cations) and negatively charged ions (anions) |
| what is usually formed in ionic bonding | a solid |
| what is ionization | atoms gain or lose valence electron(s) and become charged (an ion) |
| what is oxidation | an atom loses electron(s). a cation is formed |
| what is reduction | an atoms gains electron(s). an anion is formed |
| what are the two types of ionization | oxidation and reduction |
| metals are easily ______, forming positive ions | oxidized |
| non-metals are easily _____, forming negative ions | reduced |
| what is an oxidation number | a + or - number assigned to an atom according to an arbitrary set of rules. |
| crystalline solids are normally ____ bonding | ionic |
| what type of bonding is formed between a metal and a nonmetal ion due to very different electronegativities | ionic |
| what is covalent bonding | sharing of one or more electron pairs between two atoms, bonds are never purely ionic |
| HOFBRINCLS are examples of .....? | covalent bonding |
| what is metallic bonding | seen between metal atoms |
| what does metallic bonding result from | the attraction between positively charged metal ions and the surrounding mobile electrons |
| what is the location of the electrons in metallic bonding | they're delocalized, free to move around and not belong to only one ion |
| what is the electron sea | one plane of ions in a metal can slide past another without breaking bonds because of the electron sea (enabling ductility, malleability, and electron conductivity) |
| what happens to ionic crystals when they try to bend | they shatter ! |
| what does the melting point, boiling point, and hardness of a compound depend on? | how strongly its representative particles are attracted to each other |
| how are ionic bonds formed | electrons are transferred from metal to nonmetal |
| how are covalent bonds formed | electrons are shared between two nonmetals |
| how are metallic bonds formed | electrons are deloclaized among metal atoms |
| type of structure of ionic bonds | crystal lattice |
| type of structure of covalent bonds | true molecules |
| type of structure of metallic bonds | "electron sea" |
| physical state of ionic bonds | solid |
| physical state of covalent bonds | solid, liquid, or gas |
| physical state of metallic bonds | solid (except Hg) |
| melting point of ionic bonds | very high |
| melting point of covalent bonds | mostly low |
| melting point of metallic bonds | high |
| are ionic bonds soluble in water | yes (many) |
| are covalent bonds soluble in water | depends on polarity |
| are metallic bonds soluble in water | no |
| which bonds are odorous | covalent |
| properties of metallic bonds | metallic, ductile, lustrous |
Created by:
d0402774
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