Name: ______Period: ______Covalent Bonding(pg 583)

Some atoms of non metals are ______to lose or gain electrons. For examples, The elements in Group 4 of the periodic table have ______electrons in their outer energy level. These atoms become chemically stable by ______electrons rather than by losing or gaining electrons The attraction that forms between atoms when they share electrons is known as a ______bond. A neutral particle that forms as the result of electron sharing is called a ______. Single Covalent Bonds A single covalent bond is made of ______shared electrons A water molecule contains two ______bonds. The result of this type of bonding is a ______outer energy level for each atom in the ______. Multiple Bonds A covalent bond also can contain more than one ______of electrons A ______atom has five electrons in its outer energy level and needs ______electrons to become stable. It does this by ______three electrons with another Nitrogen atom. Covalent bonds form between ______elements. Many covalent compounds are ______or ______at room temperature. **Polar or Non Polar** An unequal sharing of electrons give each chlorine atom a slight ______charge and each hydrogen atom a slightly ______charge. The charge is ______but not equally distributed, resulting in a ______molecule. A ______molecule is one that has a slightly ______end and a slightly ______end although the overall charge is neutral. Ammonia and Water are examples of Polar Molecules Two atoms that are exactly alike can share their electrons equally, forming a nonpolar molecule. A ______is one in which electrons are shared equally in bonds. This occurs in molecules with ______atoms or molecules that are ______like CCl4. Naming Covalent Compounds Covalent compounds are those formed between elements that are ______. Using Prefixes: Scientists use the Greek ______to indicate how many atoms of each element are in a ______compounds. Practice with Covalent Compounds: Ex: NO - nitrogen monoxide

1. H3PO4

2. N2O

3. SiO2

4. N2 O5 5. HBr

6. C4H8

7. CCl4

8. H2S 9. HI

10. H2 O2

11. Cl3F

12. N2 H4

Write the formula for each of the following covalent compounds.

EX: Diphosphorus pentoxide - P2O5

13. Phosphorus trihydride 14. Dichlorine heptoxide 15. Boron trifluoride

16. Silicon dioxide 17. Silicon tetrafluoride 18. Carbon monoxide 19. Dihydrogen monoxide 20. Dihydrogen dioxide 21. Nitrogen trihydride 22. Dicarbon dihydride 23. Dinitrogen tetrahydride 24. Sulfur trioxide 25. Dichlorine monoxide 26. Silicon monocarbide 27. Sulfur tetrabromide 28. Carbon tetrahydride 29. Dinitrogen monoxide 30. Sulfur dioxide 31. Tetracarbon decahydride 32. Dicarbon hexafluoride 33. Chlorine trifluoride