Forming Ions Worksheet
This worksheet covers the fundamental concepts of ion formation, including valence electrons, octet rule, cations, and anions, suitable for Grade 11 Chemistry students.
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Forming Ions Worksheet
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Read each question carefully and provide your best answer. Show all your work where applicable.
1. What is the primary driving force for atoms to form ions?
To achieve a full outer electron shell
To increase their atomic mass
To become electrically neutral
To decrease their reactivity
2. An atom that loses electrons becomes a:
Anion
Cation
Isotope
Molecule
3. The number of electrons in the outermost shell of an atom is called the electrons.
4. Atoms tend to gain, lose, or share electrons in order to achieve eight electrons in their outermost shell, a concept known as the rule.
5. A positively charged ion is called a , while a negatively charged ion is called an .
6. Nonmetals typically gain electrons to form negative ions.
True
False
7. Metals generally have a high electronegativity, causing them to gain electrons easily.
True
False
8. Explain how the number of valence electrons determines whether an atom will form a cation or an anion.
9. Describe the electron configuration change that occurs when a sodium atom (Na) forms a sodium ion (Na+).
Match each term on the left with its definition on the right.
10. Cation
a. An atom that has gained electrons and has a negative charge
11. Anion
b. The outermost electrons of an atom
12. Octet Rule
c. An atom that has lost electrons and has a positive charge
13. Valence Electrons
d. The tendency of atoms to achieve eight electrons in their outermost shell
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