Be very careful when using appliances and electronics. Ask a parent, guardian, or adult to help you.
Continue adding baking soda until no more will dissolve in the water and a thin layer of powder forms on the bottom of the jar. You may need to add slightly more or less baking soda than the ¼ cup (55 g) to completely saturate the water.
Leave the last bit of solution in the original jar, and throw out the undissolved baking soda that’s settled on the bottom.
The crystals will need several days to grow, and you don’t want to move them once they start growing. That’s why it’s important to find a place now where you can set up the experiment.
If you make each jar a different color, half your crystals will be one color, and the other half will be another color.
Always be very careful when using scissors, and make sure you have adult supervision when cutting or using sharp tools.
The crystals will need about five to seven days to fully form. [6] X Research source
Taking notes about the length and thickness of the crystals Noting the water level in the jars Making drawings of the experiment Taking pictures of the project
Each day, remove a spoonful of baking soda solution from one of the jars Drizzle a few drops of the solution on the center of the string to saturate it As the water drips onto the plate below and evaporates, baking soda crystal deposits will form that dangle from the center of the string (stalactites) and grow up from the plate below (stalagmites). [8] X Research source
Dissolve ⅔ cup of sugar, salt, or Epsom salts in a glass of hot water Divide the solution between two clean jars Cut a piece of string to a length of 1 foot (0. 30 m) (30 cm) Place each end of the string in one of the jars Leave the experiment for several days so the crystals can form
