Question

One of the following does not happen during a chemical reaction. This is:

Options

• Breaking of old chemical bonds and formation of new chemical bonds.

• Formation of new substances with entirely different properties.

• Atoms of one element change into those of another element to form new products.

• A rearrangement of atoms takes place to form new products.

Answer 1

Atoms of one element change into those of another element to form new products.

Explanation:

During a chemical reaction, atoms are merely rearranged by breaking old bonds and forming new ones. The identity of the elements never changes, meaning atoms of one element cannot turn into atoms of another. Such a transformation occurs only in nuclear reactions, not in chemical ones.