Question

1. Amir and Gracie left some evidence of breakfast behind. Luckily, some of it can be changed back. What does Mosa write down as clues that a substance will easily change back?

Answer 1

Substances that can easily change back can undergo reversible physical changes or chemical reactions.

Step-by-step explanation:

When considering substances that can easily change back, Mosa would write down clues such as the ability to reverse physical changes. For example, if a substance can be melted and solidified repeatedly without any significant change, it indicates that it can easily change back. Another clue is the ability to undergo reversible chemical reactions. If a substance can react with another substance to form a product, and then the product can react with the original substance to reform the reactants, it suggests that it can change back easily.