Living Science Physics - Physical Quantities and Measurement Flashcards

This set explores the core concepts of physical quantities and measurement, specifically focusing on the definitions, units, and comparative densities of various common materials.

Density

The mass per unit volume of a substance; it is a measure of how tightly matter is packed in a substance.

Mathematical Formula for Density

$\text{Density} = \frac{\text{Mass}}{\text{Volume}}$ or $P = \frac{m}{V}$.

SI Unit of Density

$kg/m^3$ or $kg\,m^{-3}$.

CGS System Unit of Density

$g/cm^3$ or $g\,cm^{-3}$.

Density of water at $4^{\circ}C$

$1000\,kg/m^3$ (which is equivalent to $1\,g/cm^3$).

Conversion: $1\,g/cm^3$ to $kg/m^3$

$1\,g/cm^3 = 1000\,kg/m^3$.

Density of Air

$1.20\,kg/m^3$ (at $1\,atm$, $20^{\circ}C$), which is $0.0012\,g/cm^3$.

Density of Ice

$920\,kg/m^3$ or $0.92\,g/cm^3$.

Density of Aluminium

$2700\,kg/m^3$ or $2.7\,g/cm^3$.

Density of Iron

$7800\,kg/m^3$ or $7.8\,g/cm^3$.

Density of Copper

$8900\,kg/m^3$ or $8.9\,g/cm^3$.

Density of Silver

$10500\,kg/m^3$ or $10.5\,g/cm^3$.

Density of Lead

$11300\,kg/m^3$ or $11.3\,g/cm^3$.

Density of Mercury

$13600\,kg/m^3$ or $13.6\,g/cm^3$.

Density of Gold

$19300\,kg/m^3$ or $19.3\,g/cm^3$.

Density of Platinum

$21400\,kg/m^3$ or $21.4\,g/cm^3$.

Eureka can

An instrument used to measure the volume of irregular solids for the purpose of determining their density.