Mass is always conserved in a physical change. Energy may be released or absorbed when a substance changes from one physical state to another. In a chemical change, a chemical reaction yields a completely new substance. A substance's particles are changed during a chemical reaction.
Answer:
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Explanation:
Answer: The anwser is A a photon was realeased please mark brainliest
Explanation:
Answer:element x
Explanation:because element x is shiny and hard and that's a property of metals and metals are good conductors of heat and electricity
