1. Bonding Review Grade:«grade» Subject: «subject» Date: «date»

2. 1 An atom that has lost or gained electrons is called a ______________ A Proton B Ion C Alloy D Dipole

3. 2 Any bond formed by two oppositely charged atoms is called a ________ A Polar bond B Non-Polar bond C Covalent bond D Ionic bond

4. 3 An atom that has lost electrons has a(n) ____________________ charge A None B Neutral C Positive D Negative

5. 4An atom that has gained electrons will have a(n) ___________________ A None B Neutral C Positive D Negative

6. 5 A(n) _____________________is the attraction between 2 oppositely charged atoms. A Ionic bond B Covalent bond C Ionic crystal D Covalent compound

7. 6 A(n) _____________________is the bond formed when 2 elements share electrons. A Metallic bond B Ionic bond C Covalent bond D Alloy bond

8. 7 When one side of a molecule is slightly positive and one side is slightly negative, the resulting molecule is called a(n) __________. A Dipole B Ion C Alloy D Nonpole

9. 8 When the electronegatives of 2 atoms in a molecule are not equal a(n) _____________molecule is formed A Non-polar B Polar C Metallic D Ionic

10. 9 A chemical bond in which atoms are held together by their attraction to a common pool of electrons is a called a(n)______________. A Ionic bond B Covelent bond C Metallic bond

11. 10 From where on the periodic table do atoms that form ionic bonds come A Far left B Far right C Middle D both a and b

12. 11 What type of atoms commonly form covalent bonds? A Far left B Far right C Adjacent Metals (middle of table) D Adjacent Non-metals (upper right corner)

13. 12 In a tug of war analogy of a covalent bond, the rope represents the_________________. A atoms B electrons C electronegativity of the atoms D protons

14. 13 In a tug of war analogy of a covalent bond, the people represent the _____________. A atoms B electrons C electronegativity of the atoms D protons

15. 14 In a tug of war analogy of a covalent bond, the strength of the people represent the_________. A atoms B electrons C electronegativity of the atoms D protons

16. 15NaCl is a ______________________. A Metal B Ionic compound C Covalent compound

17. 16H20 is a ___________________________. A Metal B Covalent compound C Ionic compound

18. 17 __________________do not easily form bonds because they are very stable due to having a full outer shell. A Halogens B Alkali Metals C Alkali Earth Metals D Noble gases

19. 18 When water boils bonds are broken between hydrogen and oxygen within the molecules. A True B False

20. 19 The ability of an atom to attract a bonding pair of electrons is called electronegativity. A True B False

21. 20Carbon has __ valence electrons. A 1 B 2 C 3 D 4

22. 21Carbon likes to form ___bonds. A 1 B 2 C 3 D 4

23. 22 Suppose oxygen gains 2 electrons to become an oxygen ion.. What is the charge? A +2 B -2 C Does not change D Not enough information

24. 23 Suppose Sodium looses 3 electrons to become an sodium ion.. What is the charge? A +3 B -3 C Does not change D Not enough information

25. 24Atoms are composed of molecules A True B False

26. 25Molecules are composed of atoms A True B False

27. 26Cells are composed of molecules. A True B False

28. 27Atoms are composed of cells. A True B False

29. 28Atoms are composed of sub-atomic particles. A True B False

30. Answer Key 1.B 2.D 3.C 4.D 5.A 6.C 7.A 8.B 9.C 10.D 11.D 12.B 13.A 14.C 15.B 16.B 17.D 18.B 19.A 20.D 21.D 22.B 23.A 24.B 25.A 26.A 27.B 28.A