A molecule is the smallest particle of an element or a compound which can exist in a free state independently under normal conditions and exhibits all the properties of a substance (element or compound).

A molecule is the smallest particle of a substance (element or compound) which is capable of independent existence and shows all the properties of that substance. A molecule may be regarded as a group of two or more atoms that are chemically bonded together.

The smallest particle of matter which is capable of independent existence and which exhibits the properties of the matter is called the molecule of the matter. Example of molecules are O 2 , N 2 , H 2 and P 4 etc.

A molecule is the smallest particle of a substance (element or compound) which is capable of independent existence and shows all the properties of that substance. A molecule may be regarded as a group of two or more atoms that are chemically bonded together.

A group of two or more atoms that are chemically bonded together, that is, tightly held together by attractive forces.

Smallest particle of the matter

Mass unit equal to exactly one-twelfth the mass of a carbon-12 atom

The combining power (or capacity) of an element

A molecule is the smallest particle of an element or a compound that can exist in the free state independently under ordinary conditions and exhibits all the properties of the substance (element or compound). Example: H 2 , O 2 , etc.

EASY

Earn 100

Which of the following statements is not true about an atom?

50% studentsanswered this correctly

Important Questions on Structure of The Atom

EASY

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

State the meaning of the term atom with a suitable example.

HARD

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

Define a molecule. How many molecules are present in
(a)

9 g

of water.
(b)

17 g

of ammonia?

EASY

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

The smallest unit of a pure substance, which can always exist independently and can retain all the physical and chemical properties of it, is called:

MEDIUM

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

Define the following terms.

Molecule

MEDIUM

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

What is matter made up of?

EASY

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

Define molecule.

MEDIUM

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

'Atoms of the same element or different elements combine to form a molecule'.
Give two examples each of
a] Atoms of the same element
b] Atoms of different elements combining to form a molecule.

EASY

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

Atoms form ____________.

EASY

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

What is a molecule?

EASY

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

Define molecule and atomicity.

MEDIUM

Science>Chemistry>Structure of The Atom>Charged Particles in Matter

Give five examples of each of these.