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 .