Chemical Compounds

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Chemical Compounds

• Vocabulary

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bent shape

• Molecules with a ___ shape are tricky because
  they may appear linear from certain angles.

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covalent bond

• A ____ bond is formed when the atoms in a
  compound are sharing 2 or more pairs of electrons
  (can be single, double or triple and polar or
  nonpolar).

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crystalline structure

• Typically, ionic compounds have a ____ structure
  (form crystals), which although they may have
  color, they are brittle, transparent and grow in
  tiny block like groups.

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double bond

• A ____ is formed when 4 electrons are shared in a
  bond.

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ductility

• ____ is the ability to draw metal into wire.

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electrical conductivity

• ___ is the ability of a substance to transfer
  electricity (the flow of electrons).

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electron pair geometries

• ___ are the shapes that molecules take under the
  VSEPR theory.

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electronegativity

• ____ is the tendency for an atom to attract
  electrons to itself when it is chemically
  combined with another element.

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hydrogen bond

• A ______ or 'bridges' are the weak attraction
  between the positive and negative end of a polar
  molecule, such as the Hydrogen and Oxygen in
  water.

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ionic bond

• The ___ is referred to as the electrostatic
  attraction that binds oppositely charged ions
  together.

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Lewis Dot Structure

• A _____ is used to depict how a compound is
  formed between atoms.

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linear shape

• ___ molecules have their atoms in a line.

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malleability

• _____ is the ability of metal to be shaped or
  flattened.

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metallic bond

• A _____ is the attraction between positive ions
  and surrounding mobile electrons.

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molecules

• All compounds are ____, which are 2 or more
  different atoms bonded together.

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non-polar bond

• A ____ is formed when the atoms in a compound
  are sharing (covalent bond) the electrons evenly.

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polar bond

• A _____ is formed when one or more pairs of
  electrons are shared (making it covalent)
  unequally.

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polar molecule

• A ____ molecule must have polar bonds with a
  positive and negative end, with a shape that has
  a positive and negative end like a tiny magnet.

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representative unit

• _____ refers to the species present in a
  substance - usually atoms, molecules, or formula
  units (ions) - its the smallest we can get and
  still have the same properties of our sample.

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shared electrons

• ___ are found inside of a covalent bond.

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single bond

• In a _____, a single pair of electrons is shared
  between 2 atoms.

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tetrahedral shape

• The ___ looks like a 4 point star or plus sign
  molecule, with 4 single bonds.

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thermal conductivity

• ___ is the ability of a substance to transfer
  heat energy.

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trigonal planer

• Molecules with a ___ shape contain a double bond.

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triple bond

• In a ____, 6 electrons are shared between 2
  atoms.

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unshared pairs

• The pairs of electrons that are around an atom,
  but not part of a bond, are called ___.

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VSEPR theory

• ____ explains why compounds form the same shapes
  every time they form, because the positive and
  negative parts are pushing and pulling against
  each other like tiny magnets, so they become
  electrostatically balanced. Stands for VALENCE
  SHELL ELECTRON PAIR REPULSION