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Chapter 1 review
atoms and molecules
| Question | Answer |
|---|---|
| Atoms that have gained or lost electrons are called what? | ions |
| Atoms have a central region called what? | nucleus |
| The nucleus contains particles called what? | neutrons and protons |
| The atom has a central region surrounding the central area called what? | the electron cloud |
| The proton has the same number of what in the element? | atomic number |