Valentine Science 💘 - see the full details and science explanations here: https://www.thebestideasforkids.com/valentine-science-experiments/ Follow me @bestideasforkids for more fun activities for kids 🫶🏼*Adult supervision and assistance required for these experiments*Note: adults only should handle the borax and boiled water. Always read and follow the labels of products used. 🩷Crystal Hearts - adults add 3 tbsp of borax powder for every 1 cup of boiled water into a jar. Stir to dissolve al