What is always true according to the law of conservation of matter? A. atoms created during a chemical reaction must have the same mass as the atoms in the reactants. B. new molecules cannot be formed from the reactants during a chemical reaction. C. the total number of molecules before and after a chemical reaction stays the same. D. atoms can be rearranged during a chemical reaction but cannot be added or taken away.

Question

What is always true according to the law of conservation of matter?  A. atoms created during a chemical reaction must have the same mass as the atoms in the reactants.  B. new molecules cannot be formed from the reactants during a chemical reaction.  C. the total number of molecules before and after a chemical reaction stays the same.  D. atoms can be rearranged during a chemical reaction but cannot be added or taken away.

GPT-4o mini · Answer

The statement that is always true according to the law of conservation of matter is: D. atoms can be rearranged during a chemical reaction but cannot be added or taken away.

The law of conservation of matter states that matter cannot be created or destroyed in a chemical reaction, meaning that the total mass of reactants must equal the total mass of products. This implies that while atoms can rearrange to form new substances, the total number of each type of atom remains constant throughout the reaction.