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34 Cards in this Set
- Front
- Back
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What is a covalent bond?
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Atoms are held together by valance electron sharing
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What is an ionic bond?
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Electrons are transferred
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What is an ionic compound?
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Crystalline structure composed of ions held in place by electrostatic forces
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What is a molecular compound?
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Composed of atoms with covalent bonds; usually have lower melting points; have many different forms and properties
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What does a molecular formula look like?
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H2O
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What does the electron distribution diagram look like?
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Model of atom that shows electron layers/electrons
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What does the Lewis Dot Structural look like?
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Element symbols with dots
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What does the Structural formula look like?
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Element symbols with lines
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What does the space filling model look like?
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3-D balls combined together
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What does the ball and stick model look like?
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3-D balls and sticks
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What does the perspective drawing look like?
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Element symbols with arrows/triangles pointing toward elements
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Compared to ionic compounds, molecular compounds tend to have relatively _____ melting points and ______ boiling points.
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low, low
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A molecular compound usually consists of ......
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two or more nonmetal atoms
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Electron sharing usually occurs so that the atoms get the electron configuration of ......
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noble gases (8 valance electrons)
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Do shared electrons have identical or opposite spins?
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opposite
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What does the electron dot structure show?
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the shared pairs of valance electrons
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What does the structural formula show?
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The covalent bonds by dashes and the arrangement of covalently bonded atoms
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What is a pair of valance electrons that is not shared between atoms called?
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An unshared pair
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In the structural formula, what does one line show?
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One covalently bonded pair of electrons
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_____ and ______ are examples of diatomic elements.
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Halogens and hydrogen
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Atoms can also form ______ or ______ covalent bonds.
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Double or triple
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What are coordinate covalent bonds?
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Covalent bond where one atom contributes both bonding electrions and the shared electron pair comes from one of the bonding atoms?
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What is a polar covalent bond? (Polar bond)
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Covalent bond where the atoms are shared unequally
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Intermolecular interactions are ____ than ionic, metallic and covalent bonds.
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weaker
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What are dipole interactions?
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occur when polar molecules are attracted to one another
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What is an example of a dipole interaction?
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A hydrogen bond
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What is something related to hydrogen bonding?
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Surface tension
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What is a dispersion force?
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The weakest of all molecular interactions and is caused by the motion of electrons
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What are network solids?
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solids where all of the atoms are covalently bonded to each other
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What is an example of a network solid?
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diamond
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What group do dipole interactions and dispersion forces fall into?
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Vander Waals forces
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What is a binary compound?
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compounds composed of only two elements
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What is a ternary compound?
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compounds composed of three different elements
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Explain the Stock system
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A roman numeral is shown after the name of the positive ion to indicate the oxidation number of the positive ion
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