Question

test: covalent compounds
sucrose (table sugar) is made of covalent compounds. therefore you would expect it to have a melting point and be a conductor of electricity in a water solution.

Explanation:

Covalent compounds generally have relatively low melting points because the intermolecular forces (such as van der Waals forces and hydrogen bonds in the case of sucrose) are weaker compared to the ionic bonds in ionic compounds. Also, covalent compounds (unless they are acids, bases or some special cases that ionize in solution) do not dissociate into ions in water. Since electrical conduction in a solution requires the presence of mobile ions, sucrose (a covalent compound that does not ionize significantly in water) is a poor conductor of electricity in water.

Answer:

low; poor