Forming Ions: Grade 8 Science
Explore the process of ion formation, including electron gain and loss, and the resulting charge of atoms.
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Forming Ions: Grade 8 Science
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Read each question carefully and answer to the best of your ability. Use the provided space for your answers.
1. What happens to an atom when it loses an electron?
It becomes a negative ion.
It becomes a positive ion.
It remains neutral.
It becomes an isotope.
2. An atom that gains electrons becomes:
A cation
An anion
A neutral atom
A molecule
3. Atoms become stable by achieving a full outer electron shell, often by gaining or losing .
4. A positively charged ion is called a .
5. A negatively charged ion is called an .
6. When an atom loses electrons, it has more protons than electrons.
True
False
7. Explain why atoms form ions.
8. Describe the difference between a cation and an anion.