1. What is the charge of an atom? _______________________________________
2. What is the charge of an ion? _________________________________________
3. When does an ion become positively charged: when an atom gains or losses an electron? _________________________________________________________
4. When does an ion become negatively charged: when an atom gains or losses an electron? _________________________________________________________
2. What is the charge of an ion? _________________________________________
3. When does an ion become positively charged: when an atom gains or losses an electron? _________________________________________________________
4. When does an ion become negatively charged: when an atom gains or losses an electron? _________________________________________________________
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1) A proton carries a positive charge (+) and an electron carries a negative charge (-), so the atoms of elements are neutral, all the positive charges canceling out all the negative charges. Atoms differ from one another in the number of protons, neutrons and electrons they contain.
2) An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.
3) Ions form when atoms gain or lose electrons. Since electrons are negatively charged, an atom that loses one or more electrons will become positively charged; an atom that gains one or more electrons becomes negatively charged.
4) Ions form when atoms gain or lose electrons. Since electrons are negatively charged, an atom that loses one or more electrons will become positively charged; an atom that gains one or more electrons becomes negatively charged.
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