Why does chemistry happen?! Element Stability and the Octet Rule!

The video explains why ions form and elements bond, focusing on the concept of stability. Elements aim for a full outer shell of valence electrons, often following the octet rule, except for hydrogen and helium. Stability is achieved through ionic or covalent bonding. Examples include sodium losing an electron to form Na+ and chlorine gaining an electron to form Cl-. Helium, a noble gas, is stable with two electrons in its outer shell.

What is the main reason elements form bonds?

• To increase their mass

• To become stable

• To decrease their size

• To change their color

According to the octet rule, how many valence electrons do most elements aim to have?

• Six

• Four

• Two

• Eight

How does sodium achieve stability?

• By sharing electrons

• By losing one electron

• By gaining one electron

• By gaining seven electrons

What happens to chlorine when it becomes stable?

• It shares electrons

• It gains seven electrons

• It gains one electron

• It loses one electron

Why are noble gases like helium considered stable?

• They have a full outer shell

• They can easily gain electrons

• They have more than eight electrons

• They can easily lose electrons