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All matter is composed of one or more atoms. Each __________________ is composed of ___________________ with a unique number and arrangement of subatomic particles. These subatomic particles include protons, neutrons, and electrons. Together, positively charged ______________________ and uncharged ___________________ make up the nucleus of an atom. Negatively charged electrons orbit the nucleus in _________________________. When an atom gains or loses an electron, an electrically charged ____________________ is formed. Atoms with additional neutrons are called

User Gehad
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Answers:

1. element

2. atoms

3. protons

4. neutrons

5. electron shells

6. ion

7. isotopes

User Yuval Perelman
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