State that the law of conservation of mass means no atoms are lost or made during a chemical reaction.

In the subtopic Conservation of mass and balanced chemical equations, this learning objective focuses on state that the law of conservation of mass means no atoms are lost or made during a chemical reaction. It sits within Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations for AQA GCSE Chemistry 8462 Unit 4.3, so the explanation must stay anchored to quantitative chemistry rather than drifting into a general chemistry idea. Approved keywords to use include conservation of mass. Conservation of mass. means the principle stating that no atoms are lost or created during a chemical reaction Avoid the mistake of students often think that atoms can be created or destroyed during a chemical reaction; instead, emphasize that the law of conservation of mass states that no atoms are lost or made; they are simply rearranged For exam answers, remember that in any chemical reaction, the total mass of reactants equals the total mass of products. No atoms are lost or created