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Atoms and Bonding - Chapter 3

Name:________________________
Class: ___________ Date: ________
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Across
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Nonmetal atoms become stable when they ___ or share enough electrons to have eight valence electron
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An _____ is a mixture made of two or more elements, at least one of which is a metal.
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Metal atoms react by _____ their valence electrons.
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Ionic compounds have _____ melting points.
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Molecular compounds are ______ conductors.
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When a positive and negative ion bond, they form an ionic ______.
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An electron _____ diagram includes the symbol for the element surrounded by dots.
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Ionic solids are ______ that have an orderly, three-dimensional arrangement.
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A chemical ____ is a group of symbols that shows the ratio of elements in a compound.
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____ der Waals forces pull water molecules towards each other.
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_____ is an alloy of iron.
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Ions made of more than one atom are called ______ ions.
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An ____ is an atom or group of atoms that has en electric charge.
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A _____ bond is the attraction between a positive metal ion and the electrons surrounding it.
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Metals conduct electric current easily because the valence electrons in a metal can move _____ among the atoms.
Down
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_____ is a polar molecule.
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NaCl, _____ chloride is an example of an ionic compound.
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An _____ bond is the attraction between two oppositely charged ions.
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Hydrogen ______ its electron when forming compounds with other nonmetals.
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A chemical _____ is the force of attraction that holds atoms together as a result of the arrangement of electrons between them.
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Numbers called _____ tell the ratio of elements in a compound.
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The chemical bond formed when two atoms share electrons is called a _____ bond.
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When two atoms share two pairs of electrons, it forms a ______ bond.
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When a neutral atom loses a valence electron, it loses negative charge and becomes a ______ ion.
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Molecular compounds have ____ melting points and boiling points.
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Group 13 elements have ___ valence electrons.
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Ionic compounds conduct ____ current when dissolved in water.
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The _____ electrons of an atom are those electrons that have the highest energy.
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When writing the formula for an iconic compound, you start with the symbol for the _____ ion.
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A covalent bond in which electrons are shared equally, is a ____ bond.
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A _____ is a neutral group of atoms joined by covalent bonds.
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A covalent bond in which electrons are shared unequally, is a ____ bond.
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When a neutral atom gains an electron, it gains negative charge and becomes a ____ ion.