Bell%20work:%20Bohr%20Diagrams/%20Lewis%20Dot%20Basics

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Bell work Bohr Diagrams/ Lewis Dot Basics

1. In your notebooks, draw the Bohr diagrams and
   Lewis Dot Structures for the first twenty
   elements. Show them to your teacher when
   completed.

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Bonding
A ________ _______ is the electrical force that
links atoms together. Bonding occurs when
valence electrons move around.

• Elements can bond in three ways
• Covalent Bond
• Ionic Bond
• Metallic Bond

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Covalent Bonds

• As the attractions bring the atoms together,
  electrons from each atom are attracted to the
  nucleus of both atoms, which share the
  electrons.

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Covalent Bonds

• The sharing of electrons between nonmetal atoms
  is called a ____________, which holds the atoms
  together as a molecule.

• Three types of bonds
• Single
• Double
• Triple

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Covalent Bonds

• If each atom has room for an electron in its
  outer __________ shell and there is a strong
  attraction of both nonmetal atoms, a covalent
  bond will result.

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Nonmetal atoms will covalently bond until their
outer valence shell is _______. Nonmetal atoms,
covalently bonded as a molecule, are
________than they were as separate atoms.
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Types of Covalent Bonds

• Valence electrons that are EQUALLY shared between
  atoms are known as ________________________

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Types of Covalent Bonds

• Shared valence electrons that are more attracted
  to one atom over another is called a
  _______________

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Other definitions

• Molecule-neutral group of atoms united by
  covalent bond
• Compound-neutral group of ions united by an ionic
  bond

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Ionic Bonding

• When an atom loses or gains an electron, it is
  called an ___________.
• An _________ ________ is a positive ion and a
  negative ion joining together by TRANSFERRING
  electrons.

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A ______ is a charged atom that has lost one
or more electrons. The result is a positive
charge. An ________ is a charged atom that has
gained one or more electrons. The result is a
negative charge.
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Ionic Bonding

• The attractions between the protons and electrons
  of atoms can cause an electron to move completely
  from one atom to the other.
• Ionic Bonds are made between _________ elements
  and ___________ elements

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Ionic Bonding Examples
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Oxidation Number

• The _______________ ______________ is the total
  number of electrons that an atom either gains (-)
  or loses () in order to form a chemical bond
  with another atom.

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• http//www.nbclearn.com/portal/site/learn/chemistr
  y-now/how-atoms-bond

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Metallic Bonding

• The ______________ ___________ is chemical
  bonding that holds the atoms of a metal together.

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Covalent Bonding vs. Ionic Bonding
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Ionic vs. Covalent Bonding
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Vocabulary

• Valence Electrons
• Octet Rule
• Bohr Model
• Chemical Bond
• Covalent Bond
• Nonpolar Covalent Bond
• Polar Covalent Bond
• Nonpolar Covalent Bond
• Polar Covalent Bond
• Ionic Bond
• Cation
• Anion
• Oxidation Number
• Metallic Bond