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

2. 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

3. 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.

4. 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

5. 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.

6. 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.

7. Types of Covalent Bonds
Valence electrons that are EQUALLY shared between atoms are known as ________________________

8. Types of Covalent Bonds
Shared valence electrons that are more attracted to one atom over another is called a _______________

9. Other definitions
Molecule-neutral group of atoms united by covalent bond
Compound-neutral group of ions united by an ionic bond

10. 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.

11. 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.

12. 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

13. Ionic Bonding Examples

14. 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.

16. Metallic Bonding
The ______________ ___________ is chemical bonding that holds the atoms of a metal together.

17. Covalent Bonding vs. Ionic Bonding

18. Ionic vs. Covalent Bonding

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