Please Help!!
Tracy brought some chocolate chips in a plastic container with her lunch. She decided to save them and eat them while she waited for the bus after school. All afternoon, her lunch bag sat near the warm window in her classroom. When she finally took the container out after school, the chocolate chips had turned into a hard chunk of chocolate shaped like the bottom of the container. What happened to the chocolate chips?
They started as a solid, melted, and then became a solid again.
They changed from a solid to a gas before becoming solid once again.
They were cool solid to start, then became a warm solid before cooling again.
They went from being a hard solid to a gas, a liquid, and then to a hard solid again.
