Instant Snow Polymer

Powder rapidly expands into fluffy 'snow.' Ask students to predict what will happen. Add water to a small amount of polymer powder. Key idea: Superabsorbent polymer holds many times its mass in water. Ask: Where did all the extra volume come from? Safety and cleanup: Teacher handles powder; no ingestion/inhalation. https://www.google.com/search?q=%22Instant+Snow+Polymer%22+science+demonstration+experiment