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Density
Concept sheet | Science and Technology
This concept sheet explains density and how to use it to identify a substance. It also explains the density formula and provides detailed example calculations.
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Secondary
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Density Explained in 6 Minutes
Density
Moments in the video :
- 00:00-Would this 2 g object sink in water?
- 00:21-Density
- 01:05-Example: Calculating Density
- 02:16-Identifying a Substance
- 03:12-Example: Calculating Mass
- 04:14-Density and Buoyancy
- 04:32-Conclusion
In Short
What Is Density?
Density |(\rho)| is the ratio between the quantity of matter of a substance and the space it occupies.
In short, it’s the ratio between a substance’s mass and its volume.
|\rho =\dfrac{m}{V}|
where
|\rho\!:| density |(\text{g/mL})|
|\text{m}\!:| mass |(\text{g})|
|\text{V}\!:| volume |(\text{mL})|
Density can be expressed using other units, such as |\text{g/cm}^{3}| and |\text{kg/m}^{3}|.
How To Use the Density Formula?
Density Reference Tables |(\rho)|
Practise!
More Resources
For an interactive review of your understanding of density, check out the following Crash Course.
References
- Haynes, W. M. (Ed.). (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press.
- University of Texas at Austin. (n.d.). Density for some select substances. gchem. https://gchem.cm.utexas.edu/data/section2.php?target=densities.php