I put a hard boiled egg into a jar of vinegar for 3 days. This was my result. Is the change chemical or physical?

chemical

Explanation:

It cannot go back to its first form.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.