Chemical Bonding Review Worksheet
Chemical Bonding Review Worksheet
1. Which part of the atom is responsible for chemical bonding? ___________________________________________________________
2. What are valence electrons(be specific)? ___________________________________________________________
3. Where are valence electrons located (be very specific)? ___________________________________________________________
4. How many valence electrons do most atoms need to have a complete outer shell and be happy? ___________________________________________________________
5. Which two elements only need two valence electrons to be happy? ___________________________________________________________
6. Why do the elements you named in #5 only need two valence electrons? ___________________________________________________________
7. How many valence electrons do elements in Group 1, the Alkali Metals, have? ___________________________________________________________
8. How many valence electrons do elements in Group 2, the Alkaline Earth Metals, have? ___________________________________________________________
9. Complete the chart:
|Group Number |Number of valence electrons |
|13 | |
|14 | |
|15 | |
|16 | |
|17 | |
|18 | |
10. What is the rule for finding out how many valence electrons elements in groups 13-18 have? __________________________________________________________
11. How do ions form? ___________________________________________________________
12. If an element gives away an electron, will it form a positive ion or a negative ion? ___________________________________________________________
13. If an element gains an electron, will it form a positive ion or a negative ion? ___________________________________________________________
14. Why does an ion have a charge (be specific)? ___________________________________________________________
15. How do ionic bonds form? ___________________________________________________________
16. How do covalent bonds form? ___________________________________________________________
17. Bond the following atoms. Determine if they are ionic or covalent, circle your choice. Show the valence electrons and how they are either shared between the atoms or how they are transferred between atoms. Then write the chemical formula in the space provided.
|Ionic or covalent |Ionic or covalent |
| | |
| | |
| | |
|C Cl |Mg Cl |
| | |
| | |
| | |
| | |
|Formula ____________ |Formula _____________ |
................
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