The results of the "Rainbow Rubber Egg" experiment show that when you soak a raw egg in vinegar, the vinegar reacts with the calcium carbonate in the eggshell, causing it to dissolve over a few days. This process creates a bouncy egg, surrounded only by a thin membrane, which is why it feels rubbery. You can observe some exciting bubbles forming as the shell dissolves, which is a sign of the reaction happening. In conclusion, this experiment demonstrates how a chemical reaction can change the physical properties of an egg, allowing it to bounce! However, it's important to be careful when bouncing the egg since it’s still raw inside and can break easily.
Step 1. Place a raw egg carefully in a clear jar or cup
Step 2. Pour enough vinegar in the cup to completely submerge the egg.
Step 3. Add in a few generous drops of food coloring and stir gently. To create Rainbow Rubber Eggs make a rubber egg for each color of the rainbow.
Step 4. Observe the eggs each day. The vinegar will dissolve the egg shell over the course of several days. As the shell dissolves it will begin to bubble.
Step 5. After about 3-5 days remove the egg from the vinegar and place it in a bowl of water. Gently rub away the shell to reveal the membrane that lies just below it.
Step 6. Bounce your egg…but not too hard! The egg will now be bouncy and rubbery but it is still raw on the inside. Press it and bounce to test just how rubbery it is but beware, it will still break! Make sure you break at least one to see what the egg looks like inside!
What are the Results and Conclusion? One paragraph for an 7th grader
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