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42 Cards in this Set
- Front
- Back
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Every substance is either an element or a(n)
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compound
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Most molecular compounds are composed of two or more
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non-metals
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Molecules Consisting of two atoms are _____ molecules
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diatomic
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The chemical formula of a molecular compound is a
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molecular formula
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Molecular compounds tend to have ____ melting and boiling points.
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low
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Ionic compounds tend to have _____ melting and boiling points
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high
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A molecular formula shows how many ____ of each element contains
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atoms
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A molecular formula does not indicate the _____ of the molecule
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structure
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A compound is either ____ or ionic in nature
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covalent
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What is an electrically neutral group of atoms joined together by covalent bonds
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molecule
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What is composed of molecules?
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molecular compound
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What joins atoms held together by sharing electrons?
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covalent bond
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What is a molecule consisting of two atoms?
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diatomic molecule
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What shows the kinds and numbers present in a molecule of a compound?
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molecular formula
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Is CH4 an atom or molecule?
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molecule
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Is Ne an atom or molecule?
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atom
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Is O2 and atom or molecule?
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molecule
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When atoms share electrons to gain the electron configuration of a noble gase, the bonds are ____
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covalent
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A ____ pair of valence electrons constitutes a single covalent bond.
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shared
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Pairs of valence electrons that are not shared between atoms are called
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unshared pairs
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When it is possible to write two or more valid electron dot formulas for a molecule or ion, each formula is referred to as a ____
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resinate structure
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The chemical formulas of molecular compounds show
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the number and types of atoms in each molecule
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A molecule of bromine has ___ unshared pairs of electrons
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6
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What is a chemical formula that shows the arrangement of atoms in a molecule or a polyatomic ion?
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Structural Formula
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Is H20 polar or nonpolar?
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polar
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Is NH3 polar or nonpolar?
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polar
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Is CO2 polar or nonpolar?
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nonpolar
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Is HCl polar or nonpolar?
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polar
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what determines the physical properties of a compound?
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types of bonds
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What causes dispersion?
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motion of electrons
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Linear
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Trigonal Pyramidal
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Bent
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Trigonal Plannar
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Tetrahedral
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How many covalent bonds are in a nitrogen molecule?
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3
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Which Molecule Is This?
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CH4
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Which Molecule Is This?
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NH3
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What Type Of Model Is This
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Ball and Stick Model
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What Type Of Model Is This?
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Space Filling Molecular Model
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What Kind Of Formula Is This?
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Structural Formula
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What Type Of Model Is This?
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Perspective Drawing
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