Which Compound Contains Only Covalent Bonds

Question: Which group on the Periodic Table of the Elements contains elements that react with oxygen to form compounds with the general formula X2O?

(1) Group 1

(2) Group 2

(3) Group 14

(4) Group 18

Answer: Group 1

Question: Which compound contains only covalent bonds?

(1) NaOH

(2) Ba(OH)2

(3) Ca(OH)2

(4) CH3OH

Answer: CH3OH

Question: Which type of bond results when one or more valence electrons are transferred from one atom to another?

1. a hydrogen bond

2. B. an ionic bond

3. C. a nonpolar covalent bond

4. D. a polar covalent bond

5. Answer: an ionic bond

6. Question: Which substance contains bonds that involved the transfer of electrons from one atom to another?

7. 1. CO₂

8. 2. NH₃

9. 3.KBr

10. 4.Cl₂

11. Answer: KBr

12. Question: Which formula represents a molecular substance?

13. A)CaO

14. B)Al2O3

15. C)Li2O

16. D)CO

17. Answer: CO

18. Question: Which type of bond is ofund in one molecule of methane, CH4?

19. a. a covalent bond

20. b.a hydrogen bond

21. c.an ionic bond

22. d. a metallic bond

23. Answer: a covalent bond

24. Question: A neutral atom with the electron configuration 2-6 would most likely form a bond with an atom having the configuration

25. A. 2

26. B. 2-2

27. C. 2-8

28. D. 2-8-8

29. Answer: 2-2

30. Question:

31. Answer: chemically combined in a fixed proportion

32. Question: what is the chemical formula of iron(III) oxide?

33. A. FeO

34. B. Fe3O2

35. C. Fe2O3

36. D. Fe3O

37. Answer: Fe2O3

38. Question: Which compound contains ionic bonds?

39. A. NO2

40. B. CO2

41. C. NO

42. D. CaO

43. Answer: CaO