Units & DIMENSIONS - DENSITY & RELATIVE DENSITY
FACTORS AFFECTING DENSITY
The 4 factors affecting the density of matter are
1. Mass
2. Volume
3. State of body
4. Air pressure
5. Temperature
6. Shape of molecules
* If case of objects with a lower mass & higher mass with equal volumes, lower mass object will have low density, higher mass objects will have higher density.
\(\rho \alpha \) mass
*The density of an object or quantity of matter is its mass divided by its volume. ... Non-standard conditions can result in a change of volume, affecting the density of the materials.
\(\rho \alpha \frac{1}{{volume}}\)
* The state of bodycan make sure that the body is solid, liquid or gas. Solids usually have higher density than liquids and gases. Gases have the least densities.
*The higherair pressurecompresses the body into smaller sizes and lowerair pressure remove the compressing force.
*The temperature if very high expand the material into bigger sizes candecrease its density. Very low temperature makes the molecules closer, then it can decrease the size of the body. Smaller volumes can increase density.
*The shape of moleculesgives clarity that how the molecules are arranged in a body. Ice has a nature of shape that has wide air gaps between the molecules, so it expands its volume when frozen. This lowers its density when compared to liquid water where the wide air gaps are not existing.