You have a raw egg you put it in a hot pan boom cooked egg most chemical changes are nonreversibal <span />
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Examples of permineralization
Most dinosaur bones are permineralized. Petrified wood: Permineralization is the first step in petrification.
Atoms of the same element with different mass numbers are called isotopes
17.031 g/mol Hope this helps you
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Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.
