Procedure Text - How To Make Bouncy Egg

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Procedure Text - How To Make Bouncy Egg

 BOUNCY EGG SCIENCE EXPERIMENT XI MIPA 7

1. Diva Nauli Maharani (10)

 2. Lintang Wuri Safitri (17)

How to Make Bouncy Egg

Let’s learn how to make bouncy egg! One of an easy science experiment for student. Materials and Equipment :

 An egg

 Glass

 White vinegar

Steps:

1. Firstly, prepare all of the materials and equipment that we need.

2. Take a glass and put the egg slowly inside the glass so it doesn’t break.

3. Take some white vinegar and pour it into the glass over the egg.

4. Wait for the egg around 24 hours.

5. Examine the egg condition.

6. If the egg is still primarily white (or brown depends on the egg’s color), we must

wait for another 1-3 days.

7. Re-examine the egg condition. if the egg was translucent in color, we can go to

the next step. Several things that can be noticed, the egg is already swollen and there is still a lot of bubbles around the egg itself. And also when we turn around the glass or egg, we could see at the place of the egg has been rubbing up against the glass.

8. take out the egg of the vinegar.

9. Rinse the egg underneath some tap water.

10.Gently rubbing the egg to remove the white film that was left on the egg

11.Put a plate on the table

12. Drop the egg from low to the area that we are bouncing, if you drop it from high

area it will crash the egg

13.Bounch the egg as much as you want. 14.Finally, our bouncy egg is ready to be played!

Some of the questions might be exist :

1. How does the bubble appear?

2. How was the egg shell being peeled off by itself?

3. If we put a stain color on the egg, will the color of the egg going to change?

The answers :

1. The bubbles are Carbon Dioxide (CO2) that appear as the result of the egg’s scrapping process. When the Calcium Carbonate inside the egg completely runs out, the bubbles will stop to be formed by itself.

2. Vinegar contains an acid and has ability to scrap the shell of the egg that formed from Calcium Carbonate. So gradually, the egg shell will disappear and we notice that the white egg will be solidify and it looks like the egg after being boiled.

3. Yes it will. The stain color will be absorbed and envelop the egg’s surface.

Summary of the experiment :

Egg shell contains Calcium Carbonate (CaCO3). When the shell is soaked inside the white vinegar, Calcium Carbonate is reacting against the vinegar and forming calcium carbonate salt, and the protein will be remaining because egg shell is susceptive with vinegar acid. As we know, acids could damage a thing and change its thickness. So the acid of the vinegar will be remodel the calcium of the egg’s skin surface and make it soften.