This question is about ionic compounds and electrolysis.
Calcium chloride is an ionic compound.
Calcium and chlorine react to produce calcium chloride.
Describe what happens to calcium atoms and chlorine atoms when the ionic compound calcium chloride is formed.

Ionic bonding involves the transfer of electrons from a metal to a non-metal. 1. **Calcium (Ca):** Calcium is in Group 2 of the periodic table. Its atoms have two electrons in their outer shell. To achieve a stable, full outer shell, each calcium atom loses these two electrons. When it loses two negative electrons, it becomes a positive ion with a charge of 2+, written as Ca²⁺. 2. **Chlorine (Cl):** Chlorine is in Group 7. Its atoms have seven electrons in their outer shell. To achieve a stable, full outer shell, each chlorine atom needs to gain one electron. When it gains one negative electron, it becomes a negative ion with a charge of 1-, written as Cl⁻. 3. **Formation of Calcium Chloride (CaCl₂):** One calcium atom transfers its two outer electrons to two separate chlorine atoms (one electron to each). This results in the formation of one Ca²⁺ ion and two Cl⁻ ions. The strong electrostatic attraction between these oppositely charged ions forms the ionic bond.