1. ATOMIC BONDING Class notes Thursday, Sept. 23, 2010

2. Positive or negative charge? An atom that GAINS one or more electrons will have a _____________ charge An atom that LOSES one or more electrons will have a _____________ charge

3. Ions An atom that GAINS or LOSES an electron is called an __________. A positive ion is called a ______________. A negative ion is called a ______________.

4. Ionic bonding Atoms will ______________ one or more electrons to another to form the bond Each atom is left with a _____________outer shell Forms between a _____________ ion with a positive charge and a ____________________ ion with a negative charge

5. EXAMPLES of ionic bonding Sodium (Na) + chlorine (Cl) Magnesium (Mg) + oxygen (O)

6. Covalent bonds Atoms ____________ one or more electrons with each other to form a bond Each atom is left with a _______________ outer shell A covalent bond forms between two ________________

7. EXAMPLES of covalent bonding Hydrogen (H) + hydrogen (H) Hydrogen (H) + oxygen (O)

8. Covalent bonds continued… Carbon ( C ) + 2 oxygen (O)