Here’s a compilation of various types of chemical bonding questions that keep repeating themselves over and over again!
Please make sure you use the correct key words/phrases when answering the questions!
Example Questions
1.???????? Explain why sodium chloride has a very high melting point.
Ans:
Sodium chloride is an ionic compound.?A lot of heat energy is needed to overcome the strong electrostatic forces of attraction between the oppositely ? charged ions (Na+ and Cl–), so sodium chloride has a high melting point.
2.???????? Explain why sodium chloride will conduct electricity when molten (aqueous).
Ans:
When molten (aqueous), the ions are free to move throughout the liquid (solution). The mobile ions carry their charges with them as they move throughout the liquid (solution), thus allowing sodium chloride to conduct electricity.
3.???????? Explain why sodium chloride does not conduct electricity when solid.
Ans:
When solid, the ions (Na+ and Cl–) are held in fixed positions by strong ionic bonds.? The ions are not able to move in the solid, so there are no mobile ions to carry the current, so sodium chloride does not conduct electricity when solid.
4. ? ? ? ? Explain why carbon dioxide has a low boiling point.
Ans:
Carbon dioxide is a simple covalent compound.
Little heat energy is needed to overcome the weak intermolecular forces of attraction (Van Der Waals forces of attraction) between the carbon dioxide molecules during boiling, so carbon dioxide has a low boiling point.
5.???????? Explain why carbon dioxide does not conduct electricity in any state.
Ans:
Carbon dioxide is a covalent compound.
There are no free moving ions and all the valence electrons are used for chemical bonding.?There are no free / mobile charged particles (ions and electrons) to conduct electricity.