Atoms and Molecules Worksheet
Explore the fundamental building blocks of matter with this Grade 8 Science worksheet on atoms and molecules.
Includes
Standards
Topics
Atoms and Molecules
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Good luck!
1. Which subatomic particle has a positive charge?
Electron
Neutron
Proton
Nucleus
2. What is the smallest unit of an element that retains the chemical properties of that element?
Molecule
Compound
Atom
Mixture
3. The center of an atom is called the .
4. A is formed when two or more atoms are chemically bonded together.
5. Neutrons have a charge.
6. All atoms of the same element have the same number of protons.
True
False
7. A molecule of water (H₂O) contains three different types of atoms.
True
False
8. Describe the main difference between an atom and a molecule.
Use the words below to complete the sentences.
9. The negatively charged particles orbiting the nucleus are called .
10. When two or more different elements are chemically combined, they form a .
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