Which of the following is/are true in case of molecules?

They are capable of independent existence .

No worries! We‘ve got your back. Try BYJU‘S free classes today!

They have same properties as that of the substance.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The molecules of a compound have definite proportions of atoms.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

All the given options are correct.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D
All the given options are correct.

Molecules are capable of independent existence and have same properties as that of the substance as the molecule is the fundamental material which defines the properties of a substance.

The molecules of a compound have definite proportions of atoms.

Consider an example:

$H_{2} O$ molecule can exist independently, has same properties of water and it always has 2 Hydrogen and 1 Oxygen atom.

Suggest Corrections

Similar questions

Q. There are two species represented as ³⁵Cl and ³⁷Cl. Which of the following statement is correct regarding these species ?

(a) they have different chemical properties

(b) their physical properties are the same

(d) they are isobars of the same element

State the terms :

(a) Substances whose atoms or molecules are arranged in a definite pattern.

(b) Different forms of an element found in the same physical state.

All matter is made of small indivisible particles called atoms. Atoms, however, do not have an independent existence, in general. They generally exist in combination with other atoms in the form of molecules or ions. Molecules are thus, the smallest particles of various substances (elements or compounds) which have an independent existence. The number of atoms present in one molecule is called atomicity.

Answer the following questions after reading the paragraph.

(1) Write any specific name given the molecule containing the same atoms.

(2) Name two elements whose atoms exist independently.

(3) Atomicity of a molecule of sulphuric acid is

(a) 8 (b) 7 (c) 6 (d) 4

(4) Which of the following elements exhibits the atomicity of eight?

(a) Phosphorus (b) Sulphur (c) Boron (d) Oxygen

In the following question, two statements 'A' and 'R' are given. Read the statements carefully and mark the answer as follows.

Statement A: The atom is the smallest particle of the substance which takes part in a chemical reaction.

Statement R: Smallest particle of the substance capable of independent existence is a molecule.

Q. Which of the following statements are true for pure substances?

(i) They have constant properties throughout.
(ii) They can be compounds or mixtures.
(iii) They have the same composition throughout.

Join BYJU'S Learning Program