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Questions and Answers
What does the term 'atom' mean in Greek?
What does the term 'atom' mean in Greek?
- Invisible
- Indivisible
- Uncuttable (correct)
- Tiny
Who is credited with applying the term 'atom' to the basic units of mass of the chemical elements?
Who is credited with applying the term 'atom' to the basic units of mass of the chemical elements?
- Scientists in the 18th century
- Ancient philosophers
- John Dalton (correct)
- Scientists in the 19th century
When did atomic theory gain widespread acceptance in the scientific community?
When did atomic theory gain widespread acceptance in the scientific community?
- 21st century
- 20th century
- 18th century
- 19th century (correct)
What did scientists in the 18th and 19th centuries find atomic theory could explain?
What did scientists in the 18th and 19th centuries find atomic theory could explain?
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What are particles which are truly indivisible referred to as?
What are particles which are truly indivisible referred to as?
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Study Notes
Definition and Origin
- The term 'atom' is derived from the Greek word "atomos," meaning "indivisible."
Historical Context
- John Dalton is credited with applying the term 'atom' to the fundamental units of mass within chemical elements.
Acceptance of Atomic Theory
- Atomic theory gained widespread acceptance in the scientific community during the 19th century, particularly following Dalton's work and subsequent discoveries.
Explanatory Power of Atomic Theory
- In the 18th and 19th centuries, scientists found that atomic theory could effectively explain various phenomena, including chemical reactions, the behavior of gases, and the laws of mass conservation.
Indivisible Particles
- Particles that are truly indivisible are often referred to as 'fundamental particles' or 'elementary particles' in modern physics.
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