Final answer:
An ionic bond is formed when electrons are exchanged between two atoms, resulting in the formation of positively and negatively charged ions that are attracted to each other.
Step-by-step explanation:
A chemical bond is formed when electrons are exchanged between two atoms. This type of bond is called an ionic bond. In an ionic bond, one atom gains an electron while the other atom loses an electron. This results in the formation of positively charged ions and negatively charged ions that are attracted to each other, creating a bond between the two atoms.