Question

During a chemical reaction, the law of conservation of matter holds good.

• A. True
• B. False

Answer 1

The correct option is A True

• The change of one or more substances into other substances having different compositions and different properties is called a chemical reaction.
• Law of conservation of mass – "matter can neither be created nor destroyed in a chemical reaction”
• That means in a chemical reaction the number of atoms of each element remains the same in a chemical reaction
• For example - $\mathrm{C}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{Heat}}{\to }{\mathrm{CO}}_2\left(\mathrm{g}\right)$
• Number of atoms of Carbon and Oxygen on the left side $=1,2$
• Number of atoms of Carbon and Oxygen on the right side $=1,2$

Hence, the given statement is True.