Which statement best describes the physical properties of sodium chloride?

• A. Sodium chloride is a colorless gas at room temperature.
• B. Sodium chloride is a metallic solid that conducts electricity.
• C. Sodium chloride is a white crystalline solid with a high melting point.
• D. Sodium chloride is a liquid with a low boiling point.

Answer: (C)

Verified step by step guidance

1. Identify the chemical compound in question: Sodium chloride (NaCl).
2. Recall the typical physical state of sodium chloride at room temperature. Sodium chloride is commonly known as table salt.
3. Understand the nature of ionic compounds like sodium chloride. They are usually crystalline solids at room temperature.
4. Consider the melting and boiling points of sodium chloride. Ionic compounds generally have high melting and boiling points due to strong ionic bonds.
5. Conclude that sodium chloride is a white crystalline solid with a high melting point, which aligns with the properties of ionic compounds.