Energy Levels in Atoms
Explore the concept of energy levels, electron shells, and valence electrons in atoms with this comprehensive worksheet for Grade 10 Science.
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Energy Levels in Atoms Worksheet
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Read each question carefully and provide your best answer. Some questions may require you to refer to the provided diagram.
Observe the diagram of an atom's electron cloud and energy levels below:
1. What do the concentric circles in the diagram represent?
Proton orbits
Electron energy levels
Neutron paths
Atomic bonds
2. How many electrons can the first energy level (shell) hold?
1
2
8
18
3. Electrons occupy specific energy levels or around the nucleus of an atom.
4. The electrons in the outermost energy level are called electrons.
5. Atoms tend to be most stable when their outermost energy level is .
6. Electrons can move freely between any energy level without gaining or losing energy.
True
False
7. The amount of energy an electron possesses increases as its distance from the nucleus increases.
True
False
8. Explain why valence electrons are particularly important in chemical reactions.
9. Describe the difference between a ground state electron and an excited state electron.