Chemical Bonding

Chemistry Board Question
Chapter Six

Chemical Bonding
Short Question
1. What is polarity? Why covalent compounds are usually not soluble in water? (DB-01, JB-05) pre08 2
2. "Ionic bond is a very strong bonding" Explain. (DB-01) 2
3. What do you mean by the polar and non-polar compounds? Explain with example. 2
4. Why ionic compounds are soluble in water. (JB-01) 2
5. What is metallic bond? (JB-01, JB-05) 1
6. i) How covalent bond is formed? Write with an example. 2
 ii) Discuss with figure the bonding of the methane molecule. (JB-00) 2
7. What is meant by ion? State the properties of ionic compounds. (BB-00) 2
8. Write down the four properties of covalent bond. (SB-05) 2
9. What do you mean by covalent bond? (BB-00) 1
10. i) What is metallic bond? Does metal conducts electricity? (SB-05, DB-99, CB-02, CtgB-02) 2
 ii) Why are metals good conductors of electricity? 2
11. Write the names of inert gases. Why they are called so? (CB-99, SB-01, CtgB-00, BB-02, DB-2)pre08 2
12. Write the names and symbol of four inert gases. (RB-99) 2
13. What type of compound CaCl2 is? Explain at your own. (SB-01) 2
14. Write the two properties of ionic compound. (JB-02) 1
15. What are the causes of difference in shapes of covalent compounds? (RB-00, CtgB-02) 2
16. i) Why Carbon does not form ionic compounds? (CtgB-05, BB-02) test 08 2
 ii) Why does Carbon usually form covalent compounds? (SB-03) 2
17. Why the melting point of ionic compounds is very high while covalent compounds have low melting point? (SB-04) 2
18. What is covalent compound? What do you mean by polarity of covalent compounds? (JB-00, 01) 2
19. Why the two non-metal atoms combine together by covalent bond? Explain. (DB-02) 2
20. Why the inert gases do not combine? (JB-02) 2
21. Why methane molecule is tetrahedral in Shape? (SB-05)Test 08 2
22. What is bond? What is ionic bond? How it is formed- write with example. (All Board-99) 2
23. i) Write down the kind of bonding in NaCl. (SB-03) 2
 ii) Explain what type of compound, NaCl is? (CtgB-05) 2
 iii) What is Vanderwall's foce? (JB-04, 01)pre08 2
 iv) What is meant by Ammonium Salt? Give example. (DB-03) 2
 v) What is electropositive element? State with example. (DB-02) 2
24. i) What is octed? (CB-05) 1
 ii) What do you mean by valence electrons? (CB-05) pre 08 1

Broad Question
25. What is ionic bond? Discuss with figure the bond remains in methane molecule. (BB-01) 3
26. What is chemical bond? How many types are there and what are they? (CtgB-98, 99, CB-01) 3
27. i) Discuss the comperative studies of properties of ionic and covalent compounds. (CtgB-01) Pre08 3
 ii) Write the difference between ionic and covalent compounds. (CB-04) 3
28. i) What is ionic bond? How it is formed? (SB-01, CtgB-98, 99) 3
 ii) Discuss ionic bond with the example. (DB-05) 3
29. Write down the differences between ionic compounds and covalent compounds. 
30. "Ionic Compounds are soluble in water, but covalent compounds are usually not soluble in water" Explain. 3
31. What kind of a compound CaCl2 is? Justify your answer. (CB-99) 3
32. Explain the bond pattern in NaCl compound. (SB-03) 3
33. What is valance electron? What are the advantages to know regarding valence electrons? Write with some examples. (DB-02)Pre08 3
34. What is an ion? How many types of ions are there? Name them, Explain with examples how an ion is formed. (JB-99, 03, SB-02) 3
35. i) Draw the structures of the molecules of CO2, H2O, CH4, NH3, HCN, H2O2, Hydro Cyanogen, dinigrogen tri-oxide, acetyline (RB-03) 2
 ii) CO2 and H2O both are triatomic. What is the difference in their shapes? Why? (JB-02) 1
36. What are the causes of difference in shapes of covalent compounds? Explain with example. (CtgB-02) 3
  Or,
 Explain with example, the reason of difference in shapes of covalent compounds. (CtgB-02) 3