GCSE Chemistry - Conservation of Mass #26

The video explains the principle of conservation of mass in chemical reactions, emphasizing that mass is conserved as atoms are neither created nor destroyed. It illustrates this with examples, showing how to balance equations by comparing relative formula masses. The video also discusses exceptions when gases are involved, which can lead to perceived changes in mass. It highlights the importance of conducting experiments in sealed containers to ensure accurate mass measurements, as gases can escape or enter from the air, affecting the results.

What new insight or understanding did you gain from this video?