What is the name of the theory proposed by John Dalton that describes the nature of matter?

• A. Atomic Theory
• B. Quantum Theory
• C. Kinetic Molecular Theory
• D. Periodic Law

Answer: (A)

Verified step by step guidance

1. Understand that the question asks for the name of the theory proposed by John Dalton that explains the nature of matter.
2. Recall that John Dalton is famous for introducing a theory that describes matter as being composed of small, indivisible particles called atoms.
3. Recognize that this theory is known as the Atomic Theory, which laid the foundation for modern chemistry by explaining how atoms combine to form compounds.
4. Differentiate this from other theories listed: Quantum Theory deals with the behavior of particles at atomic and subatomic levels, Kinetic Molecular Theory explains the motion of particles in gases, and Periodic Law relates to the arrangement of elements in the periodic table.
5. Conclude that the correct name of the theory proposed by John Dalton is the Atomic Theory.