Answer:
Yes, the conservation of matter was upheld in this experiment
Explanation:
Yes, the law of conservation of matter was upheld in Mariana's experiment.
According to the law of conservation of matter, "matter is neither created nor destroyed."
This holds true in Mariana's case, because the loss in mass can be explained by the smoke that was released. 1.5 grams of smoke was released into the air and it explains why the ash was less than the starting metal.