1. Does the following diagram represent a chemical or physical change? How do you know? Be sure to explain your answer.

The following diagram represent a chemical change, because new molecules are made with the two different molecules .
A chemical change, also known as a chemical reaction, is a process in which one or more substances are changed into one or more new and different substances.
In other words, a chemical change is a chemical reaction involving the rearrangement of atoms.
In a chemical change, the number and type of atoms remain constant, but their arrangement is changed.
Hence , the following diagram represent a chemical change, because new molecules are made with the two different molecules .
Learn more about chemical change, here:
https://brainly.com/question/23693316
#SPJ2