The density of water is 1000 kg/m3. What does this mean?  

Expert Answers

An illustration of the letter 'A' in a speech bubbles


Density is a quantitative physical characteristics of a substance or more or less stable mixture. When we take some piece or quantity of a substance, it has mass and volume. The mass divided by volume is called density, and it depends on substance only (remains the same for different pieces of the same substance).

Different substances have different density. The density of water is about `1000 (kg)/m^3,` or `1 g/(cm^3).` This means that every cubical meter of water weighs about `1000 kg,` every half of a cubical meter weighs `500 kg` and so on. So if we know what the substance is, we can compute its weight given a mass, and vice versa.

That said, density of a substance may change with temperature and pressure, sometimes significantly.

Approved by eNotes Editorial Team

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial