Reprinted with permission from Snackable Science Experiments by Emma Vanstone, Page Street Publishing Co. 2019. Photo credit: Charlotte Dart
Snack your way through this fun project! Make sure to take note of the learning points so that you can teach as you create.
Isn’t it frustrating when you want a chilled drink but don’t have any ice on hand? But did you know you can make ice cubes quickly using hot water? It’s not instantaneous, but it’s worth a go just to see if it works for you!
Boiled water also gives you a transparent ice cube instead of the cloudy ice you get with tap water.
- Ice cube tray
- Use the hot-water technique to make multicolored ice cubes quickly— you can either add food coloring, heat up juice or use colored herbal teas.
- Bring a kettle of water to a boil, then remove it from the heat and leave it to cool for about 30 minutes.
- Fill half the ice cube tray with cold water and half with the hot water from the kettle.
- Place the ice cube tray in the freezer and check every 30 minutes to see if the ice is frozen.
- Record how long it takes for the top of the ice in each side of the tray to feel solid.
- Once the ice cubes are completely frozen, remove them from the ice cube tray to see if they look different.
Use the hot-water technique to make multicolored ice cubes quickly— you can either add food coloring, heat up juice or use colored herbal teas.
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This story originally appeared in the Summer 2020 issue of KIWI Magazine. Read the full issue here, or check out the latest from KIWI Magazine.