what happens during a chemical change? composition stays the same. mass is lost. composition changes.
what happens during a chemical change? composition stays the same. mass is lost. composition changes.
Answer
Brief Explanations:
In a chemical change, substances react to form new substances, so the composition changes. According to the law of conservation of mass, mass is neither created nor destroyed in a chemical reaction, so mass is not lost. And if the composition stays the same, it is a physical - not a chemical - change.
Answer:
Composition changes.