Atomic Structure Theories

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He demonstrated that electrons revolve around the nucleus.
He formulated the first experimental atomic model.
He proposed that atoms are the smallest indivisible components of matter. (correct)
He discovered protons and neutrons in the nucleus.

The nucleus is where electrons are located.
Protons and neutrons revolve around the nucleus at high speeds.
Electrons are found in the nucleus along with protons and neutrons.
The nucleus contains protons and neutrons, while electrons revolve around it. (correct)

<p>They revolve around the nucleus at high speeds in specific energy levels. (C)</p> Signup and view all the answers

<p>Subatomic particles (D)</p> Signup and view all the answers

The smallest unit of an element that can exist independently.

Proposed the first scientific theory about atoms, suggesting they are indivisible particles and the basis of all matter.

A dense, positively charged core of an atom containing protons and neutrons.

Negatively charged particles that orbit the nucleus of an atom in specific energy levels.

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The fundamental particles that make up an atom, namely protons, neutrons, and electrons.

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Ancient Greek philosophers proposed the idea of atoms as indivisible fundamental building blocks of matter.
Dalton's early 19th-century atomic theory also considered the atom as indivisible.
Rutherford's 1909 model was the first based on experimental evidence.
Atoms have a tiny, dense nucleus containing protons and neutrons.
Electrons orbit the nucleus in specific energy levels.
Protons, neutrons, and electrons are known as subatomic particles.