Rainbow babies in nature rarely have the chance to see it with their own eyes, but with candy, we can make one with our baby at home. It's the weekend. As usual, I will prepare a fun little experiment with my baby-"Rainbow Candy Cup".

Step 1: Prepare the materials, including 1 packet of white sugar, 1 handful of rainbow sugar, 4 paper cups, 1 glass, 1 spoon, 1 dropper (straw can be used instead if you don't have it at home) and 1 cup of hot water.

step 2: put different amounts of white sugar into 4 paper cups, , 2, 4 and 8 spoons.

step 3: put a rainbow sugar (different colors) in each paper cup, for example: spoon of white sugar+red rainbow sugar, 2 spoons of white sugar+yellow rainbow sugar, 4 spoons of white sugar+green rainbow sugar, and 8 spoons of white sugar+purple rainbow sugar.

step 4: pour the same amount of hot water into 4 paper cups. Then give the baby a chopstick, and let ta keep stirring and stirring … until all the sugar is dissolved.

Step 6: After dissolving, we will get 4 colors of sugar water. According to the sugar content, arrange the colors together with the baby from the densest (purple) to the least dense (red).

after the arrangement, let the baby use the dropper to transport the sugar water from the paper cup to the glass in turn (from purple to red).

after the sugar water is superimposed in the order of purple-green-yellow-red, we will get a rainbow-like jar. (After several experiments, we finally replaced the large glass with a small glass, which has a higher success rate.)

At this time, we can ask the baby a question: "Why can the' ribbons' in the jar be layered instead of mixed together?"

experimental principle: after different amounts of sugar are dissolved in the same amount of water, the density of sugar water will be different. The high-density sugar water (purple) will sink to the bottom, and the low-density sugar water (red) will float to the top. Because they are temporarily immiscible, the phenomenon of layered colored sugar water will be maintained.

Children don't know how to accompany their baby at home, so a little experiment to improve their knowledge can be arranged. It's also very happy to give the big baby two rainbow candy left over from the experiment to relieve his hunger. (What else do you want to watch to play games with? Let's talk in the message area ~)