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These are pictures from my chemistry experiment - we used vinegar to soak the shell off of an egg. When the shell was totally gone, the egg looked twice as big! Journaling reads: Exploring Creation with Chemistry: Experiment 4.2-Egg experiment was chemical. The change is not reversible. There is no way to get the eggshell back... Water experiment was physical. The change is reversible. The ice can melt back into water. Chemical change - A change that affects the type of molecules or atoms in a substance. Physical change - A change in which the atoms or molecules in a substance stay the same. November 2006. The other notations are just random chemical equations.


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