STEM Virtual Experiment Series, Episode 3 - Creating Hot Ice скачать в хорошем качестве

STEM Virtual Experiment Series, Episode 3 - Creating Hot Ice

Today we step into the Lab to create HOT ICE! Remember to send us a video of yourself performing any one of the experiments from our 3-part series! Explain in your video the concept you are demonstrating to win amazing prizes. Email : [email protected] Instructions: Measure 4 cups of vinegar and pour it into a medium-sized pot. Add 4 tablespoons of baking soda (one tablespoon at a time) to the pot. The sodium bicarbonate (baking soda) and acetic acid (vinegar) will fizzed like crazy forming sodium acetate. NOTE: The key is to add the baking soda slowly so it doesn’t erupt over the edges of your pot. Next, stir the mixture until all the baking soda dissolved and stopped fizzing. Slowly boil the solution over medium-low heat for a little over an hour to remove the extra water. The solution should reduce by about 75% with just about 3/4 cup remaining. White powdery crystals will start to form on the sides of the pot near the top of the solution when the solution. NOTE: If you boil your solution at a higher temperature it may turn yellow-brownish but don’t worry, however the experiment will still work! Pour the concentrated sodium acetate into a glass pyrex measuring cup and place it in the fridge to cool. Scrape a little bit of the dried sodium acetate powder off the inside of the pot to use later. After about 30-45 minutes, the solution will be cool enough to turn into ice. Place a small pile of the sodium acetate powder from the pot in the center. This will act as a seed for the crystals to start forming. Begin pouring the solution very slowly into the pan and crystals should begin instantly forming.