In this explosion experiments for kids you will see explosion of water in a microwave oven. Did you know that heating water in a microwave oven to 100 grudusov can be dangerous?In this article, there will be no trials, it is solely for informational purposes only, to warn you of possible danger.
Real life case of a young man decided to drink a cup of coffee. He took a cup of water, put it in the microwave to heat (something he did many times before). It is not clear for how long he set the timer, but he wanted to bring the water to a boil. When the timer turned off the oven, he took the cup from her. When he looked into the cup, he found that the water is not boiling, but suddenly, the water from a cup “spilled” into his face. The cup remained intact until he dropped it from his hands, but all the water out of it splashed in his face because of the accumulated energy.
His face was covered with blisters and burns he received first and second degree, which can leave scars. It can also be partially lost his sight. When he was in hospital, the attending physician told him that it happens quite often, and noted that the water (alone) should never be heated in a microwave oven. If, however, heat water in a microwave oven in this manner, you need to put something into the cup, such as a wooden spoon for stirring, tea bag, etc.(Nothing metal), in order to dissipate energy. However, explosion experiments for kids is much safer to boil water in a kettle.
Explanation: This is due to a phenomenon which is known as superheating. This can happen at any time by heating the water, and is especially likely when the vessel in which heated water, new, or by heating a small amount of fluid (less than half a cup).
What’s happening in this explosion experiments for kids? The water is heated more rapidly than can be generated steam bubbles in it. If the cup is absolutely new, then on its inner surface is unlikely to have small cracks that could be the site of formation of bubbles. Since the bubbles do not have the capacity to form and release a certain amount of heat, the liquid does not boil and continue to heat up, leaving the boiling point.
What usually happens after that? When you remove the cup from the microwave, the water is vibrating, which is sufficient to promote rapid formation of bubbles and the expulsion of hot liquid. The rapid formation of bubbles occurs for the same reason as the foaming fizzy drinks when they open after the shaking.