1. What is Density?

Density is a physical property of matter defined as mass per unit volume. For water at standard temperature and pressure (STP), the density is approximately 1000 kg/m³.

2. How Does the Calculator Work?

The calculator uses the density equation:

Where:

• \( \rho \) — Density (kg/m³)
• \( m \) — Mass (kg)
• \( V \) — Volume (m³)

Explanation: The equation calculates how much mass is contained in a given volume of substance.

3. Importance of Density Calculation

Details: Density is crucial for determining buoyancy, purity of substances, and in various engineering applications. It helps identify materials and predict their behavior in different conditions.

4. Using the Calculator

Tips: Enter mass in kilograms and volume in cubic meters. All values must be positive numbers. For water, typical density at 4°C is 1000 kg/m³.

5. Frequently Asked Questions (FAQ)

Q1: Why does water's density change with temperature?
A: Water molecules move farther apart as temperature increases, decreasing density. Maximum density occurs at 4°C.

Q2: What is the density of ice compared to liquid water?
A: Ice has lower density (about 917 kg/m³) due to its crystalline structure, which is why it floats.

Q3: How does salinity affect water density?
A: Adding salt increases water's density because dissolved ions add mass without significantly increasing volume.

Q4: What are typical density values for seawater?
A: Seawater typically has density between 1020-1030 kg/m³ at the surface, increasing with depth.

Q5: How precise is this calculator?
A: The calculator provides theoretical density based on ideal conditions. For laboratory precision, temperature and pressure must be controlled.