Question: Make a pop noise by mixing two chemicals together.

  Options: 
 A. Take equal volumes of vinegar and water, about a half cup each. Place each in a plastic soda bottle and push a cork into the top. The reaction between acid and base will make a gas and expel the cork. It will pop.
 B. Take equal volumes of vinegar and baking soda, about a half cup each. Place each in a plastic soda bottle and push a cork into the top. The reaction between acid and base will make a gas and expel the cork. It will pop.
Answer: B