2. Covalent Compounds Sharing is Caring

3. Summary of ionic compounds 1. Electrically neutral –The net charge of the compound is zero 2. Formed from Cation(s) & Anion(s) –Electrons are given away or gained 3. Metal ion and a Nonmetal ion 4. 8 IS GREAT

4. Binary Covalent Compounds PRIMARY DIFFERENCES: Made up from two NONMETALS Electrons are shared to make an Octet

5. Water Molecule

6. Covalent bond of Carbon & Hydrogen

7. Covalent (Molecular) Compounds Stay together as molecules Are often INSOLUBLE –(won’t dissolve in water or other liquids) Do NOT conduct electricity Can be solids, liquids or gases at room temperature Low melting points

8. Ionic vs. Covalent Ionic Compounds Contain positive and negative ions (Na+ Cl-) Solids such as table salt High melting and boiling points Separate into charged particles in water to give a solution that conducts electricity Covalent Compounds Exist as neutral molecules CO 2 Solids, liquids,or gases Lower melting and boiling points Remain as same molecule in water and will not conduct electricity

9. Animation http://www.mhhe.com/physsci/chemistry/ani mations/chang_7e_esp/bom1s2_11.swfhttp://www.mhhe.com/physsci/chemistry/ani mations/chang_7e_esp/bom1s2_11.swf