Question

Do the experiments using egg shell and chalk with dilute acids and prepare experiment notes​

Answer 1

Vinegar is an acid. Eggshells are made of calcium carbonate. If you soak an egg in vinegar the eggshell will absorb the acid and break down, or dissolve. The calcium carbonate will become carbon dioxide gas, which will go into the air. What is left is the soft tissue that lined the inside of the eggshell. It will bounce!

Science Experiment Idea: Make three bouncing eggs. Soak one egg in vinegar for 24 hours (1 day), one egg for 48 hours (2 days) and one egg for 72 hours (3 days). How do the eggs look when done soaking? How does each egg behave when you try to bounce it? Hint: BOUNCE OUTSIDE!

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Answer 2

Experiment using eggshell and chalk with dilute acids

Explanation:

Aim:

Eggshell and chalk contain calcium carbonate. In this experiment, eggshell and chalk is used to show how calcium carbonate reacts with vinegar ( acetic acid)  

Materials :

• Eggshell

• Chalk

• Vinegar

• Two glass cups or jar

Procedure for eggshell with dilute acids:

• The eggs are soaked into the jar containing vinegar.

• The eggs are completely immersed in vinegar and kept in the refrigerator for 24 hours. The next day, the old vinegar from the jar is drained down.

• The eggs are covered with fresh vinegar and it is kept in the refrigerator for one week.

Observation:

• After one week, the eggs look translucent, the eggshell is dissolved by vinegar and observed that vinegar is permeate through the egg's membrane, and the egg swells.

Conclusion :

Vinegar is an acid, reacts with the eggshell containing calcium carbonate, an acid-base reaction takes place. Carbon dioxide is released as a result bubbles are formed.

Procedure for chalk with dilute acid:

• Two or three chalks were put into the jar.

• Vinegar is added to the jar until the chalks are completely immersed.

Observation:

• After an hour, chalks begins to dissolve when it reacts with vinegar. Bubbles are formed

Conclusion:

• Vinegar is an acid; chalk is a base at it contains calcium carbonate. So, an acid-base reaction takes place.
• Acid started to dissolve calcium carbonate. It produces water and salts. Calcium salt is left at the bottom of the jar, carbon-di-oxide is released and the vinegar becomes water.