Question

Write characteristics of compounds. Give two examples of compound.

Answer 1

Definition of compounds.

Compounds are pure substances formed by the chemical combination of two or more elements in a fixed proportion by mass.

Water( ${\mathrm{H}}_2\mathrm{O}$) is a compound formed by the chemical combination of two hydrogen atoms and one oxygen atom.

Characteristics of compounds.

• Compounds cannot be decomposed into constituent elements by physical methods.
• Their composition is definite, constant and uniformly homogeneous throughout their bulk.
• They have definite and fixed properties.
• Examples-water(${\mathrm{H}}_2\mathrm{O}$),carbon dioxide(${\mathrm{CO}}_2$).