Question

The smallest unit of a pure substance which always exist independently and can retain all the physical and chemical properties of that substance is called a molecule.

• A. True
• B. False

Answer 1

The correct option is A True

• The smallest unit of a pure substance which always exist independently and can retain all the physical and chemical properties of that substance is called a molecule.
• Molecules are made up of groups of atoms.
• For example: ${\mathrm{H}}_2\mathrm{O},\mathrm{CaO},{\mathrm{N}}_2$etc.
• Therefore, the given statement is true.