Answer:
See explanation
Explanation:
In order to answer this question, we have to look at the principle of conservation of mass. This principle states mass is neither created nor destroyed in a chemical reaction.
Hence, in a chemical system undergoing a reaction, the total number of atoms present in the system remain the same before and after the reaction. This also implies that the weight of the system does not change.
Thus, the weight of a chemical system does not change after a chemical reaction.
Hmm...an easier way to find a theme of the story would be either scheming through the story looking for clues or facts or read it.
I hope this answer helps.
C. the word Have shows you it is past tense but it does not end in ed so it is no a past participle.