Atoms and Molecules Worksheet
Explore the fundamental building blocks of matter with this Grade 7 Science worksheet on atoms and molecules, covering their structure, properties, and interactions.
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Topics
Atoms and Molecules
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Read each question carefully and answer to the best of your ability. Good luck!
1. What are the three main subatomic particles found in an atom?
Protons, neutrons, and electrons
Ions, isotopes, and elements
Quarks, leptons, and photons
Cells, tissues, and organs
2. Which subatomic particle carries a positive charge?
Electron
Neutron
Proton
Nucleus
3. The center of an atom is called the .
4. A molecule is formed when two or more atoms together.
5. Water (H₂O) is an example of a .
6. All atoms of the same element have the same number of protons.
True
False
7. Electrons orbit the nucleus in fixed paths like planets around the sun.
True
False
8. Describe the difference between an atom and a molecule.
9. Label the parts of the atom shown in the diagram below.
A:
B:
C: