Final answer:
The physical properties of potassium nitrate, silicon dioxide, and copper sulfate pentahydrate are related to their chemical bonding.
Step-by-step explanation:
The physical properties of potassium nitrate, silicon dioxide, and copper sulfate pentahydrate are related to their chemical bonding. The type of chemical bonding determines the physical state, melting and boiling points, electrical conductivity, and water solubility of a compound. Ionic compounds, like potassium nitrate and copper sulfate pentahydrate, have high melting and boiling points, conduct electricity when dissolved in water, and are generally soluble in water. Covalent compounds, like silicon dioxide, have lower melting and boiling points, poor electrical conductivity, and their water solubility depends on the type of intermolecular forces involved.