ch. 7 chemistry vocab

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an ion that has a negative charge


an ion with a positive charge


the force that holds two atoms together; may form by the attraction of a positive ion for a negative ion or by sharing electrons

chemical bond

a three dimensional geometric arrangement of particles in which each positive ion is surrounded by negative ions and each negative ion is surrounded by positive ions; vary in shape due to sizes and relative numbers of the ions bonded

crystal lattice

an ionic compound whose aqueous solution conducts an electric current


the electrostatic force that holds oppositely charged particles together in an ionic compound

ionic bond

compounds that contain ionic bonds

ionic compound


lattice energy

the simplest ratio of ions represented in an ionic compound

formula unit

an ion formed from only one atom

monatomic ion

the positive or negative charge of a monatomic ion

oxidation number




polyatomic ion

a mixture of elements that has metallic properties; most commonly forms when the elements are either similar in size or the atoms of one element are much smaller than the atoms of the other


the electrons involved in metallic bonding that are free to move easily from one atom to the next throughout the metal and are not attached to a particular ion

delocalized electron

proposes that all metal atoms in a metallic solid contribute their valence electrons to form a sea of electrons and can explain properties of metallic solids such as malleability, conduction, and ductility

electron sea model

the attraction of a metallic cation for delocalized electrons

metallic bond

what is a chemical bond? the attraction between....

a positive and negative ion

what forms the chemical bonds?

valence electrons

cations form when:

an electron is lost

anions form when:

electrons are gained

to name an anion, change the ending to ___


groups 1-3 are ____


groups 5-7 are


all other ionic compounds aside from oxides are ___


describe a binary ionic compound:

2 elements, 1st is a metal, 2nd is a nonmetal

strength of bond is determined by.....

melting point, boiling point, and hardness

melting and boiling points of ionic compounds:


what is one characteristic of an electrolyte?

can conduct electricity

energy is absorbed


energy is released


ionic bonds are usually endo or exothermic?


in an ionic bond, ______ determines what will break the bond

lattice energy

smallest particle of an element


how many elements do ternary ionic compounds have?

more than 2 - one cation and a polyatomic ion (polyatomic ions have more than one atom)

only positive polyatomic ion


nearly all the polyatomic ions end in ___

ate or ite

exceptions of ending in ate or ite in polyatomic ions:

hydroxide, cyanide, and peroxide

oxyanion with more oxygen ends in ____


oxyanion with less oxygen ends in ___


naming ionic compounds: name ____ first

positive ion

metal atoms close together and overlap, forming a _____

electron sea model

in a metallic bond, electrons are called _____

delocalized electrons

in a metallic bond, bc each outer electron can move, each atom is a ____


metallic bonds are held together by the attraction of the ____ and the ____

positive nuclei; delocalized electrons

charge sequence on the periodic table:

1+ 2+ 3+ skip 3- 2- 1- skip

possible chages of copper

1+ and 2+

possible charges of iron

2+ and 3+

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