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Mass and volume

Volume and its units

1) What is volume ?

The volume corresponds to the space occupied by an object or substance (solid, liquid or gaseous).

The volume can be calculated for simple geometric shapes such as
- Cubes: Volume = side x side x side
- Parallelepiped: Volume = length x width x height
as well as spheres, cones, pyramids etc..

For objects of more complex shapes, we must make measurements to determine the volume

2) Units of volum: cubic meter

The standard unif of volume is the cubic meter ( symbol m3 ).
A cubic meter corresponds to the space occupied by a cube of side 1 m.

L'unité de volume du système international est le mètre cube de symbole m
Un mètre cube correspond à l'espace qu'occupe un cube de 1 m de coté.

The volume can also be expressed using multiples of the cubic meter:
- The cubic decameter (da
- The cubic hectometer (h
- The cubic kilometers (k
Or using submultiples of the cubic meter:
- The cubic decimeter (d
- The cubic centimeter (c
- The cubic millimeter (m

Each unit is a thousand times greater than the previous one:
1 cubic centimeter is equal to 1000 cubic millimeter.
1 cubic decimeter is equal to 1000 cubic centimeter.
1 cubic meter is equal to 1000 cubic decimeter.

Each quantity expressed in one of these units can also be expressed in any of the other. This change of units can be achieved using a conversion table:

 km3  hm3 dam3   m3  dm3  cm3  mm3

Science class

Mechanics lessons

Water on Earth
Changes of state in the nature: the water cycle
Water in human body
Test for water
Properties of water in different states

States of matter

States of matter and its changes
Boiling water
Water: freezing and melting
Changes of state: mass and volume
Molecules in different states of matter

Mixtures and solutions

Heterogeneous mixtures
Homogeneous mixtures
Vaporization of water
Dissolving a solid in water
Conservation of mass on dissolving
Miscibility in water

Mass and volume

Volume and its units
Measuring volume with a graduated cylinder
Mass and its units
Measuring the mass of a liquid
Mass of a liter of water
Volumetric mass density

Air and atmosphere

Earth's atmosphere protect us
Threats to the Earth's atmosphere
Composition of air
Air and life

Atoms and molecules

Molecules in mixtures and pure substances
Molecules and states of matter
Composition of molecules
Constituents of the atoms
The electrical neutrality of the atom


Basics of combustion
The combustion of carbon
The combustion of butane

Atoms and chemical reactions

Chemical reactions
Chemical equations
Law of conservation of mass
Chemical synthesis


Most common metals
How to distinguish metals ?

Corrosion of metals
Electrical conductivity of solid materials
Electrons and free electrons
Electric current in metals


The conductivity of aqueous solutions
Aqueous solutions and ions
The direction of movement of ions
Formation of ions
Tests for ions

Acidic and basic solutions

pH of aqueous solutions
Ions in acidic and basic solutions
Dilution of acids and bases
Composition of hydrochloric acid
Chemical reaction between iron and hydrochloric acid

Electrochemical cells and chemical energy

Chemical reaction beteween a copper sulphate solution and zinc
Copper sulfate and zinc battery
Basics of electrochemical cell


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