Atom Structure Worksheet
This worksheet covers the fundamental concepts of atom structure, including subatomic particles, atomic number, mass number, and isotopes, suitable for Grade 10 science students.
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Atom Structure Worksheet
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Read each question carefully and answer to the best of your ability. Show your work where applicable.
1. Which subatomic particle has a positive charge?
Electron
Neutron
Proton
Photon
2. The atomic number of an element is determined by the number of:
Electrons
Neutrons
Protons
Protons and Neutrons
3. The mass number of an atom is the sum of its and .
4. Isotopes are atoms of the same element that have different numbers of .
5. Describe the main components of an atom and their respective charges.
6. Explain the difference between atomic number and mass number.
7. All atoms of a given element have the same number of neutrons.
True
False
8. Electrons are found in the nucleus of an atom.
True
False
Match each term on the left with its definition on the right.
9. Proton
a. Negatively charged subatomic particle
10. Electron
b. Subatomic particle with no charge
11. Neutron
c. Positively charged subatomic particle