Make a sticky note waterfall and build an ice tower
Become a master of the elements as you transform water into a mountain of ice before your eyes!
1For Supercool your water
this first step you’ll need access to a freezer and a bottle of purified or filtered water. You’ll have to ensure that the water is pure for this experiment, so use either sealed bottled water or tap water that’s been run through a home filtering system and place it in a very clean bottle. Once you’re confident that your water is squeaky clean, go ahead and place it in the freezer.
3 Forge your tower
Once your bottled water has had time to supercool and the puddle in your dish has turned to ice, you’re ready to create your tower. Take both the ice platform and the bottled water from the freezer and place the dish in a large bowl. Now pour your water over the block of ice and watch as it crystallises and transforms into a tower! Keep pouring to see the tower grow higher.
2 Prepare the platform
Now you need to leave the water to cool for around two and a half hours, but you can prepare the base of the tower while you wait. Find a small dish big enough to hold a small puddle of water. Ideally this should be made of metal — which gets nice and cold in the freezer — but any material that readily cools will do. Add some water straight from the tap and place the dish in the freezer.
4 experiment with crystals
Amazingly, an ice tower isn’t the only way you can spontaneously form ice with supercooled water. For this next step you’re going to need some more purified water (cooled in the freezer), an ice cube and a clean, clear glass. Pour your bottled water into the glass and drop the ice cube inside. The water will almost instantly begin to freeze and form lots of small crystals.