Once upon a time, there was a girl named Lily who loved to cook. She learned that when she boiled water, it turned into steam, which helped her cook pasta and rice. When she fried food, the oil turned into gas and made the food cook evenly.

Lily also learned that air conditioners use a special process to cool down a room. They change a gas into a liquid and then back into a gas, which takes away the heat. And when she used a steam cleaner to clean her house, the water turned into steam and helped her remove stains.

One day, Lily went on a road trip with her family. She noticed that the car they were in used gasoline to move. The gasoline turned into gas and helped the car go faster.

Lily also learned that when people make ice cream, they freeze a liquid mixture to make it solid. And when they make chocolate, they change a solid into a liquid and then back into a solid again.

Lily was amazed at how much the change of state of matter was used in everyday life. She couldn’t wait to learn more about it and use it in her cooking adventures.