Atomic Structure Worksheet
Grade 10 Science worksheet covering the fundamental concepts of atomic structure, including subatomic particles, atomic number, mass number, isotopes, and electron configurations.
Includes
Standards
Topics
Atomic Structure Review
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability.
1. Which subatomic particle has a positive charge?
Electron
Neutron
Proton
Nucleus
2. What determines the identity of an element?
Number of neutrons
Number of electrons
Number of protons
Atomic mass
3. The is the central part of an atom, containing protons and neutrons.
4. Atoms of the same element with different numbers of neutrons are called .
5. The total number of protons and neutrons in an atom is known as the .
6. Draw a simple Bohr model diagram of an atom with 3 protons, 4 neutrons, and 3 electrons. Label the nucleus, protons, neutrons, and electrons.
7. Explain the difference between atomic number and mass number.
8. All atoms of a given element have the same number of neutrons.
True
False
9. Electrons orbit the nucleus in fixed energy levels or shells.
True
False
Use the words below to complete the sentences.
10. A negatively charged subatomic particle is called an .
11. The represents the number of protons in an atom.
12. An is an atom with the same number of protons but different number of neutrons.
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