Chemical Bonding Study Questions

 

1. What is a bond?
2. Why do atoms form chemical bonds?
3. When is an atom or compound stable?
4. How do you determine the number of bonds an element can form?
5. What is electronegativity?
6. Which element in a compound will win the tug of war for electrons?
7. What four things influence electronegativity?
8. Compare the electronegativity of active metals and non-metals.
9. What kind of relationship exists between bond strength and DEN?
10. What determines the character of a chemical bond?
11. What is bond energy?
12. With respect to bond energy, what can be said about the reactants compared to the products of a reaction?
13. What type of bond forms when 0.5<DEN<2.0?
14. What type of bond forms when DEN<0.5?
15. When is a covalent bond formed?
16. What type of bond is present between these elements:
1. B – P
2. Be – Se
3. C – Na
4. Li – O
5. At - Be
17. What are the characteristics of ionic compounds?
18. What are the characteristics of covalent compounds?
19. How can the atoms in a molecule move?
20. Why do polar molecules have higher melting points than non-polar molecules?
21. Describe a metallic bond?
22. Why are metals conductors even though they are electrically neutral?
23. Why are metals malleable rather than brittle?
24. Why do Lewis dot models misrepresent molecular shape?
25. What determines the shape of a molecule?
26. Why is the domain of a shared pair stretched compared to an unshared pair of electrons?
27. Which type of electron pair has the greatest repulsive force?
28. Why is the bond angle in a linear bond 180º?
29. Compare trigonal planar, tetrahedron, pyramid, and bent pyramid bonds.
30. What shape of bond forms between these elements:
1. GaF₃                b. NLi₃             c. H₂O             d. BeF₂            e. CCl₄
31. What cause the knotting of proteins?
32. What produces the hydrogen bond that coils DNA?
33. Classify these molecules as polar or non-polar:
1. HF       b. CO₂             c. CH₃Cl          d. CCl₄             e. SO₂