A substance in a solid at room temperature. It is unable to conduct electricity as a solid but can conduct electricity as a liquid. This compound melts at 755 degrees celsius. Would you expect this compound to have ionic bonds, metallic bonds, or covalent bonds?
A) metallic bonds
B) ionic bonds
C) covalent bonds
In addition to carbon and hydrogen atoms choose another element from the list that can bond with carbon in organic compounds.
A) iron
B) calcium
C) fluoride
D) nitrogen
metalic
ionic
The substance that is solid at room temperature but can conduct electricity as a liquid and melts at 755 degrees Celsius is likely a compound with covalent bonds, as covalent compounds generally have high melting points and do not conduct electricity well in the solid state but can conduct when melted or in solution. Therefore, the answer is C) covalent bonds.
In addition to carbon and hydrogen atoms, another element from the list that can bond with carbon in organic compounds is D) nitrogen. Nitrogen commonly forms covalent bonds with carbon, such as in the amino groups present in many organic compounds.
To determine the type of chemical bonds in a compound that is a solid at room temperature and melts at a specific temperature, we need to consider the properties of the compound itself.
Ionic bonds form between positively and negatively charged ions. They're formed when one or more electrons are transferred from one atom to another. Ionic compounds typically have high melting points and are good conductors of electricity in both solid and liquid states.
Metallic bonds occur between metal atoms. They involve the sharing of a "sea" of delocalized electrons that move freely throughout the structure, giving metals their unique properties such as high electrical and thermal conductivity.
Covalent bonds involve the sharing of electrons between non-metal atoms. Covalent compounds usually have low melting points and, in general, do not conduct electricity well.
Knowing that the compound in question is a solid at room temperature but can conduct electricity as a liquid, we can deduce that the compound must have ionic bonds. Ionic compounds are unable to conduct electricity as solids but can conduct electricity when molten or dissolved in water.
Therefore, the answer to the first question is B) ionic bonds.
Regarding the second question, when it comes to organic compounds consisting of carbon and hydrogen, various elements can bond with carbon to form different compounds. Iron, calcium, and fluoride are not commonly found in organic compounds. On the other hand, nitrogen is frequently found in organic compounds and forms covalent bonds with carbon. So, the answer to the second question is D) nitrogen.