In a thought-provoking scientific investigation, our CIE 3 learners set out to explore a fascinating question: Do gases have mass? Using digital balances, they carefully measured the mass of a balloon before and after inflation.
What appeared to be a simple task soon revealed a profound truth—the inflated balloon weighed more, confirming that the air added inside, though invisible, had mass. This clear evidence allowed students to see gases not as empty or weightless, but as real forms of matter occupying space and contributing to mass.
Through this hands-on activity, learners grasped a fundamental concept: all matter—solid, liquid, or gas—has mass and takes up space. It was a compelling reminder that in science, even the unseen can be measured, understood, and appreciated.
This investigation helped bring abstract ideas to life, encouraging young scientists to trust in observation, evidence, and the power of questioning what lies beyond the visible.
“Even what cannot be seen still carries weight in the realm of matter.”
