Pre-lab Questions
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Pre-lab Questions
1. List the atomic numbers for each of the following elements.
| Iron | _________ | Oxygen | _________ |
| Calcium | _________ | Nitrogen | _________ |
| Potassium | _________ | Hydrogen | _________ |
2. What determines if a bond is polar?
3. Use the periodic table to determine if potassium chloride (KCl) formed through covalent or ionic bonds? Use evidence from the Introduction to support your answer.
4. Research two common, polar molecules and two common nonpolar molecules. Draw their molecular structure and explain how the structure makes each molecule polar or non-polar.