Final answer:
Stars and lightning are examples of a state of matter called plasma, which is the fourth state of matter. Plasma is formed when gas is heated to extremely high temperatures and becomes ionized.
Step-by-step explanation:
Stars and lightning are examples of a state of matter called plasma. Plasma is often considered the fourth state of matter, in addition to solids, liquids, and gases. It is a highly energized state of matter in which the particles are not bound to each other and move freely. In the case of stars, plasma is formed when gas is heated to extremely high temperatures and becomes ionized. Bolt of lightning, on the other hand, is also a form of plasma generated through the movement of electrons in the air during a thunderstorm.
Learn more about plasma state of matter