National Geographic Mega Crystal Growing Kit Grow 2 Crystals Science Gifts For Kids 8-12 Educational DIY Kit Toy

Play Steps:

1. Pour all the crystal powder into a 100ml measuring cup, then pour 100 ℃ hot water into the measuring cup until the water level reaches 80-90l

2. Stir quickly for 3-5 minutes until the crystal powder is completely dissolved. (Note: Some tiny particles may not be visible to the eyes, so they appear to have dissolved and stirring should not be stopped immediately. Stir for a while longer.)

3. Wait for the water temperature to drop to around 40 ℃ (about 15 minutes, touch the cup wall with your hand to make it slightly warm)

4. Place the seed crystal into the measuring cup and let it stand with the center convex surface facing upwards for 8 hours without moving the position

5. The growth cycle is 5-14 days. During this process, the liquid should not be shaken and water should not be added halfway. The growth rate of crystals depends on air humidity, and the lower the air humidity, the faster the growth

6.Principles of Crystal Planting Experiment :Add crystal powder to hot water to saturate it. When the water cools, the crystal powder will precipitate in the form of crystals, and the crystals will precipitate along the direction of gypsum. This phenomenon is called "crystallization"