1.  Molecular covalent  Network covalent  Ionic  Metallic Let’s look at the table!

2. TypeStructureHardnessMelting/ boiling point Conductivity Molecular covalent Click Network covalent Click IonicClick MetallicClick

3.  Crystal lattice structure: alternating cations and anions held together by electrostatic attractions (+ attracted to -, just like a magnet!) Back to table

4. Ionic compounds are hard!! Make sure in your table, you also know what it means that an ionic compound is brittle and why! http://auden.webster.edu/~scottsus/characteri stics.htm Back to table

5. http://www.kentchemistry.com/links/bonding/ ionicProps.htm Back to table

6. Read the caption for the three pictures in the link below. http://www.chem.ufl.edu/~itl/2051_s97/week _1/ionic.html Back to table

7. http://sixthsense.osfc.ac.uk/chemistry/bondin g/metallic.asp Back to table

8. Scroll down to “Strength and workability” and write information about hardness, malleability, and ductility http://www.chemguide.co.uk/atoms/structure s/metals.html#top Back to table

9. Scroll to slide 8!! http://www.slideshare.net/chemistryhelpline/p roperties-of-compounds-ionic-covalent- and-metallic Back to table

10. Scroll to slide 8!! http://www.slideshare.net/chemistryhelpline/p roperties-of-compounds-ionic-covalent- and-metallic Back to table

11. http://www.avogadro.co.uk/structure/chemstr uc/network/g-molecular.htm Click on the link, and press “covalently bond C atoms” and “keep bonding” to see the structure. Back to table

12. http://www.avogadro.co.uk/structure/chemstr uc/network/g-molecular.htm Read the first paragraph! Back to table

13. Scroll to slide 4!! http://www.mi.mun.ca/users/pfisher/Chemistr y1011_92.pdf Back to table

14. Since there is a network of strong covalent bonding, network covalent solids are very hard. Back to table

15. Molecular covalent are all nonmetal atoms. You drew examples of these when we did lewis structures. The molecules are held together by intermolecular forces. Here is an example: Back to table

16. Since molecular covalent molecules are held together by IMFs which are MUCH weaker than bonds, molecular covalents are considered soft molecules. Back to table

17. Scroll a ways down to “electrical conductivity” http://www.chemguide.co.uk/atoms/structure s/molecular.html Back to table

18. 2 nd paragraph!! http://www.chemguide.co.uk/atoms/structure s/molecular.html Back to table