Density = Mass ÷ Volume (ρ = m/V). Water density is 1 g/cm³. To find density: weigh the object (mass), measure volume, divide. Example: 100g object with 50cm³ volume has density of 2 g/cm³.
Objects with density < 1 g/cm³ float in water; > 1 g/cm³ sink.
Calculate density, mass, or volume using the formula ρ = m/V. Solve for any variable given the other two.
Density (ρ)
2.0000 g/cm³
Formula Used
ρ = m ÷ V = 100 ÷ 50 = 2.0000
| Material | Density | kg/m³ |
|---|---|---|
| Water | 1 g/cm³ | 1000.0 |
| Ice | 0.92 g/cm³ | 920.0 |
| Aluminum | 2.7 g/cm³ | 2700.0 |
| Iron | 7.87 g/cm³ | 7870.0 |
| Copper | 8.96 g/cm³ | 8960.0 |
| Gold | 19.32 g/cm³ | 19320.0 |
| Lead | 11.34 g/cm³ | 11340.0 |
| Wood (Oak) | 0.75 g/cm³ | 750.0 |
| Plastic (PVC) | 1.4 g/cm³ | 1400.0 |
| Air (at sea level) | 0.001225 g/cm³ | 1.2 |
Density is a physical property of matter that describes how much mass is contained in a given volume. It's often used to identify substances, predict whether objects will float or sink, and in engineering calculations.
ρ = m / V
Where:
