University:
Harrisburg University of Science and Technology
Course:
HEM 210 | Organic Chemistry I
Academic year:

2022
Views:

445

Pages:

3
Author:

5prinzg1s

Review for Test on Bonding Answer on your own paper. 1. a) Why do atoms bond? b) What is the "octet rule" for atoms? 2. Explain what an ionic bond is and give an example. 3. Explain what a covalent bond is and give an example. 4. Write formulas for ionic compounds that may form from the combination of the following elements: a. Na and O b. Al and Cl c. Fe+2 and N-3 5. Draw a Lewis structure that shows how an ionic bond forms between Ca and Br and the formula of the compound formed. 6. Name the following compounds: a. N2O d. FeSO4 g. BeC2O4 b. SnS2 e. PCl5 c. Ba(ClO2)2 f. Ca3(PO4)2 h. CF4 7. Write formulas for the following compounds: a. sulfur hexafluoride b. copper(II)nitrate d. ammonium phosphite e. lead(IV)chloride g. aluminum sulfite h. nitrogen monoxide c. cesium oxide f. diphosphorous pentoxide 8.a. Describe the structures and properties of ionic compounds. b. Give 3 examples of ionic compounds. 9. a. Describe the structures and properties of covalently-bonded compounds (also called: molecular compounds.) b. Give 3 examples of covalently bonded, molecular compounds. 10. If you are given an unknown compound and need to determine what it is, what is a simple test you could do to determine whether it is an ionic compound or a covalent compound? 11. Draw Lewis structures for the following compounds: a. PF3 b. CO3-2 c. SBr2 d. SeCl6 e. CO2 g. SO3 h. CN- f. SO2 12. Name the shape and give the bond angles for each of the structures above in question 11. 13. a. What is a polar bond? b. What is a pure covalent (nonpolar) bond? 14. Identify each of the following bonds as polar, nonpolar or ionic: a. N-Cl b. K-Br c. F-F d. Se-Br e. O-S f. C-H g. Ca-O 15. Describe a metallic bond. 16.a) Describe covalent network bonding, b) Give an example of a substance that has covalent network bonding, and c) describe some of the properties of covalent network substances. . Selected answers: 4. a. Na2O b. AlCl3 c. Fe3N2 6. a. dinitrogen monoxide b. tin(IV)sulfide c. barium chlorite g. beryllium oxalate h. carbon tetrafluoride 7. a. SF6 b. Cu(NO3)2 c. Cs2O d. (NH4)3PO3 d. iron(II)sulfate e. phosphorus pentachloride f. calcium phosphate e. PbCl4 f. P2O5 g. Al2(SO3)3 h. NO 9. Melt it and see if it conducts electricity. If the melted compound does conduct electricity, it is ionic. If it doesn’t conduct when melted it is covalent (molecular). 12. a. modified tetrahedral or pyramidal <109.5o b. trigonal planar 120o c. bent or modified tetrahedral <109.5o o o o d. octahedral, 90 e. linear, 180 f. modified trigonal planar or bent <120 g. trigonal planar 120o h. linear 180o 14. a. nonpolar b. ionic c. nonpolar d. nonpolar e. polar f. nonpolar g. ionic 16. b)diamond and quartz c) very hard solids, very high melting points, nonconductors