A fun and simple science experiment and craft for toddlers and preschoolers. Teach them all about action and reaction when combining oil, baking soda, and vinegar. What you’ll need: Glass jar or plastic bottle Cup Oil Liquid food coloring (not gel) Vinegar Baking soda Easy Steps: Pour approximately 2 tbsp of baking soda into your bottle/jar Fill your bottle/jar ¾ way with oil In a separate cup, pour in vinegar (1/4 full) and mix with food coloring Slowly drip in the colorful vinegar and watch yo