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lidiya [134]
2 years ago
11

A newspaper turns yellow in sunlight. Is this a physical or chemical change?

Physics
1 answer:
LekaFEV [45]2 years ago
5 0
It is a chemical change. I always think of a chemical/physical change as if you could  reverse it back as it started off, for example if you stepped on a can you can reverse the can back probably not exactly like it was before but you can still reverse it so this would be a physical change, and if you baked a pizza you could not reverse the dough and everything else back. 
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Atoms are neutrally charged, which means there has to be an equal number of positive and negative particles. The negative particles of an atom are its electrons, and since our atom has 4 protons, it must also have 4 electrons.
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