Question

Sugar is made up of clear, colorless crystals that dissolve easily in water, but the crystals and their solution do not conduct electricity. Which statement describes sugar?
A.) It is made up of atoms that are held together by metallic bonds.
B.) It is made up of atoms that are held together by covalent bonds.
C.) It is made up of atoms that are held together by weak ionic bonds.
D.) It is made up of atoms that are held together by strong ionic bonds.

Answer 1

Option B) Sugar is made up of atoms that are held together by covalent bonds.

Metallic bonds are only for metals and they do not dissolve in water.

Weak and strong ionic bonds produce solutions with ions that conduct electricity.

Then sugar has to be consituted by covalent bonds, which do not produce ions and do not conduct electricity.

Answer 2

Answer: Option (B) is the correct answer.

Explanation:

In a metallic bond, there occurs a sea of electrons which is uniformly distributed throughout the solid substance or material.

Metallic bonds always form between metals.

In a ionic bond, there will always be transfer of electrons from one atom to another.

An ionic bond is always formed between a metal and a non-metal.

Chemical formula of sugar is $C_{12}H_{22}O_{11}$. As carbon, hydrogen and oxygen are all non-metals hence, there will be sharing of electrons between these atoms.

As a result, sugar is a covalent compound and when dissolved in water it does not dissociate into ions. Therefore, a sugar solution is unable to conduct electricity.

Therefore, we can conclude that the statement it is made up of atoms that are held together by covalent bonds, describes sugar.