Chalk & Vinegar Pop Rockets Fizz-Powered Chalk Rockets: Loud, Safe CO₂ Pops for Kids (Adult Supervision Required) Experiment Instructions Materials Needed: A few pieces of school chalk (calcium carbonate) or a small spoonful of powdered chalk (not sidewalk chalk with paint) White vinegar (about ¼ to ½ cup per trial) Small plastic film canisters with tight-fitting snap lids (or small plastic pill containers with secure lids) — do not use glass or metal A funnel or paper for pouring chalk into the