what are atoms

what are atoms

1. An atom is a particle of matter that uniquely defines achemical elements.

2. atoms consistd of a central nucleus and is usually surrounden by one or more electrons

3. each electron is negativily charged, the nucleus is positively charge

4. the nucleus contains one or more relatively heavy particles known as protons and neutrons

5. atoms were created after the Big Bang 13.7 billion years ago

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