Multiple Choice
Which best explains how scientists confirmed that the Moon formed around the same time as Earth?
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2. Atoms & Elements
Atomic Theory
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following lists the scientists involved in atomic theory in the correct chronological order?
A
Thomson, Dalton, Bohr, Rutherford
B
Dalton, Thomson, Rutherford, Bohr
C
Rutherford, Bohr, Dalton, Thomson
D
Bohr, Rutherford, Thomson, Dalton
Verified step by step guidance1
Step 1: Understand the historical timeline of atomic theory development by identifying the key contributions of each scientist.
Step 2: Recall that John Dalton proposed the first modern atomic theory in the early 19th century, establishing atoms as indivisible particles.
Step 3: Recognize that J.J. Thomson discovered the electron in 1897, leading to the plum pudding model of the atom.
Step 4: Note that Ernest Rutherford conducted the gold foil experiment around 1911, discovering the atomic nucleus and proposing a nuclear model.
Step 5: Remember that Niels Bohr developed his model of the atom in 1913, introducing quantized electron orbits around the nucleus.
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