Electron Arrangements Worksheet
Explore the arrangement of electrons in atoms, including energy levels, valence electrons, and their role in chemical bonding for Grade 8 Science.
Includes
Standards
Topics
Electron Arrangements
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. Electrons orbit the nucleus of an atom in specific energy levels or .
2. The maximum number of electrons that can be held in the first energy shell is .
3. Electrons in the outermost shell of an atom are called electrons.
4. Atoms tend to be most stable when they have a full outer shell, often containing valence electrons (except for the first shell).
5. Which subatomic particle is responsible for an atom's chemical properties?
Protons
Neutrons
Electrons
Nucleus
6. An atom with 6 protons, 6 neutrons, and 6 electrons would have how many valence electrons?
2
4
6
8
7. All electrons in an atom are located in the outermost energy shell.
True
False
8. The number of valence electrons determines how an atom will react with other atoms.
True
False
9. Draw a Bohr model diagram for an atom of Oxygen (O), which has 8 protons and 8 electrons. Label the nucleus and each electron shell with the number of electrons in it.
10. Explain why atoms form chemical bonds in terms of electron arrangements.