Covalent and Ionic Bonding
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Research the answers to the following questions on the internet and write your answers in your own words. For each answer, include the address of the web site (or title and author of a book or article) that you used to help you answer the question.
1. Which type of compound usually has higher melting points: ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points)
2. Do ionic compounds conduct electricity as: (3 points)
1. Solids?
2. Liquids?
3. Aqueous solutions (when the ionic compounds are dissolved in water)?
3. Do covalent compounds conduct electricity as: (3 points)
1. Solids?
2. Liquids?
3. Aqueous solutions (when the covalent compounds are dissolved in water)?
4. Explain the differences between ionic and covalent bonding that account for the differences in their melting points.
5. In order to conduct an electrical current, a substance must have charged particle s (ions or electrons) that are free-moving (able to move about throughout the sample).
6. Why do you think ionic compounds are not able to conduct electricity as solids, even though they can as liquids and in solution?
7. why do you think pure (distilled) water does not conduct electricity but tap water usually does?
Part II
Molecular Model for your models of H2O, NH3, CH4, and CO2.
1. Use the information from the lesson to determine the answers to the questions below.
Conclusion:
For each of your molecules, answer the following questions:
1. Determine the electronegativity between the atoms of each molecule.
2. Identify the bond as either ionic or covalent.
3. State whether the molecule is polar or non polar.
4. Identify the structure as having hydrogen bonding, dipole-dipole moments or London dispersion forces (LDF).
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Solution Summary
An examination of covalent and ionic bonds. The differences between the bonding and a review compounds.
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Covalent Bonding 3.6
Research the answers to the following questions on the internet and write your answers in your own words. For each answer, include the address of the web site (or title and author of a book or article) that you used to help you answer the question.
1. Which type of compound usually has higher melting points: ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points)
Ionic compounds have a higher melting point that covalent compounds. The molecules of an ionic compound have strong attractions to the ions in their vicinity, which high melting points in ionic solids. Whereas, covalent compounds have a very close as a solid, but doesn't have an attraction to the other molecules in the material (The information was found at http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/bond2.html "Comparison of Properties of Ionic and Covalent Compounds").
2. Do ionic compounds conduct electricity as: (3 points)
1. Solids? No, ionic compounds don't conduct electricity, because there are no free electrons.
2. Liquids? Yes, ionic compounds as a liquid will conduct electricity, because of the free electrons.
3. Aqueous solutions (when the ionic compounds are dissolved in water)? Yes, ionic compounds will conduct electricity, because the dissociated ions in the solution will carry a charged (The information was found at http://antoine.frostburg.edu/chem/senese/101/compounds/faq/properties-ionic-vs-covalent.shtml "What properties distinguish ionic compounds from covalent compounds?").
3. Do covalent compounds conduct electricity ...
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