Multiple Choice
In modern atomic theory, all atoms of the same element have the same what?
2
views
4. Atoms and Elements
Atomic Theory
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In early atomic theory, what did Democritus believe an atom was?
A
A tiny, indivisible particle that makes up all matter
B
A dense nucleus surrounded by electrons in quantized energy levels
C
The smallest unit of an element that can be split into protons, neutrons, and electrons by ordinary chemical reactions
D
A positively charged sphere with electrons embedded throughout (plum pudding model)
Verified step by step guidance1
Understand that the question is about the historical concept of the atom according to Democritus, an ancient Greek philosopher.
Recall that Democritus proposed that matter is composed of very small, indivisible particles called atoms, which cannot be broken down further.
Note that Democritus's idea was purely philosophical and did not include any internal structure like protons, neutrons, or electrons.
Recognize that later atomic models, such as the plum pudding model or the nuclear model, introduced concepts like electrons and nuclei, which were not part of Democritus's theory.
Conclude that Democritus believed an atom was a tiny, indivisible particle that makes up all matter.
Related Videos
Related Practice
