‹ Class 8 · Ch 9
The Amazing World of Solutes, Solvents, and Solutions · Principle 15 of 24

Units of volume

m³, dm³, cm³, L and mL.

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NCERT: 9.5.1 Determination of density

Think

A tetra pack

A tetra pack says 200 mL of buttermilk.

What does mL stand for?

What this lesson covers

The idea

The SI unit of volume is the cubic metre (m³); smaller volumes are expressed in dm³ or cm³ (cc); a litre (L) equals 1 dm³ and a millilitre (mL) equals 1 cm³.

A tetra pack

A tetra pack says 200 mL of buttermilk.

What does mL stand for?

  • Millilitre, a unit of volume
  • Millimetre, a unit of length
  • Milligram, a unit of mass

Volume units

Open each tab.

Volume units

Volume is the space an object occupies.

SI unit of volume: m³. Smaller: dm³, cm³ (cc). 1 L = 1 dm³. 1 mL = 1 cm³.

Notes

1 L = 1 dm³, 1 mL = 1 cm³ = 1 cc. SI unit: m³.

Check yourself

The SI unit of volume is …

1 litre is equal to how many dm³?

Answer: 1 dm³

1 L = 1 dm³.

1 mL is equal to how many cm³?

Answer: 1 cm³

1 mL = 1 cm³.

One cm³ is also written as …

  • cubic metre (m³) — correct. Yes!
  • metre. The metre is a unit of length.
  • kilogram. The kilogram is a unit of mass.
  • one cm. cm is a unit of length.
  • one cc — correct. Yes!
  • one kg. kg is a unit of mass.
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