ADULT SUPERVISION REQUIRED
large wide-mouth heat-proof glass container or beaker
vinegar
ARM & HAMMER® Baking Soda
water
measuring spoons and cup

USE ONLY THE MATERIALS RECOMMENDED. DO NOT TRY WITH OTHER HOUSEHOLD PRODUCTS.

Experiment Procedures:

Step 1: Have a container of water handy, since this experiment uses matches.

Step 2: Place 1 tablespoon of ARM & HAMMER® Baking Soda in the bottom of the heat-proof glass.

Step 3: Pour in 1 cup of vinegar.

Step 4: After the bubbling stops, slowly lower a lit match into the container.

Step 5: Watch the flame die as you lower it into the container.

Explanation:

The reaction of baking soda and vinegar produces carbon dioxide (CO2). Carbon dioxide is heavier than air so it displaces the air in the container and stays there, rather than dispersing immediately. As the match is lowered into the container, the lack of oxygen in the container smothers the flame putting it out.

Variations:

• Light a candle and, using the carbon dioxide in the container, carefully try to extinguish the candle by ‘pouring’ the carbon dioxide onto the flame.
• Stand three candles of different heights in the container. Make one candle half the height of the container, one candle just below the lip of the container and one candle 1 inch taller than the container. Place 2 tablespoons of ARM & HAMMER® Baking Soda in the container. Light the three candles. Slowly pour 2 cups of vinegar into the container. Watch to see which candle goes out first and if any stay lit!