What does a specific gravity value indicate?

What does a specific gravity value indicate?

• A. The volatility of a substance.
• B. The solubility in water.
• C. The density relative to water, with water defined as 1.
• D. The melting point.

Answer: (C)

Specific gravity shows how dense a substance is compared with water. It’s the ratio of the substance’s density to the density of water, with water defined as 1. This makes the value unitless. If the specific gravity is greater than 1, the substance is denser than water and will tend to sink; if it’s less than 1, it will float; if it’s exactly 1, it has the same density as water. This helps predict behavior in spills and containment. Volatility, solubility in water, and melting point are different properties and aren’t determined by specific gravity. Volatility relates to how easily a substance vaporizes, solubility concerns how well it dissolves in water, and melting point is the temperature at which a solid becomes a liquid.

Specific gravity shows how dense a substance is compared with water. It’s the ratio of the substance’s density to the density of water, with water defined as 1. This makes the value unitless. If the specific gravity is greater than 1, the substance is denser than water and will tend to sink; if it’s less than 1, it will float; if it’s exactly 1, it has the same density as water. This helps predict behavior in spills and containment.

Volatility, solubility in water, and melting point are different properties and aren’t determined by specific gravity. Volatility relates to how easily a substance vaporizes, solubility concerns how well it dissolves in water, and melting point is the temperature at which a solid becomes a liquid.