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1.4 Density 

 

Density – Mass per unit volume.

p=m/v


 

How to find volume of irregular solids (displacement method):

  1. Measure the initial volume of liquid.

  2. Submerge the solid inside the liquid.

  3. Take the final reading of the liquid 

  4. Find the difference in volume.

  5. Difference in volume = volume of solid.

 

How to find the density of liquids & solids:

  1. Find out the volume. For liquid, use a measuring cylinder. For solids, use the displacement method, or use the equation height * width * length

  2. Find out the mass, by using a beam balance or an electronic balance.

  3. Calculate density with the equation. p=m/v

 

Float or sink?

  • A substance (solid or liquid) which is less dense than water will float.

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