Podcast
Questions and Answers
According to Thomson's 'plum pudding' theory, atoms were postulated to be?
According to Thomson's 'plum pudding' theory, atoms were postulated to be?
- Made up of only positively charged particles
- Solid and indivisible
- Empty spheres
- Solid structures of positive charge with tiny negative particles stuck inside (correct)
Who discovered positively charged particles called protons?
Who discovered positively charged particles called protons?
- Thomson
- Goldstein (correct)
- Dalton
- J.J. Thomson
Who found the negatively charged particles known as electrons?
Who found the negatively charged particles known as electrons?
- J.J. Thomson (correct)
- Dalton
- Goldstein
- Rutherford
According to Dalton's atomic theory, atoms of the same element are?
According to Dalton's atomic theory, atoms of the same element are?
Which scientist proposed that atoms were indivisible, hard, dense spheres?
Which scientist proposed that atoms were indivisible, hard, dense spheres?
Who discovered the positively charged particles called protons?
Who discovered the positively charged particles called protons?
According to Dalton's atomic theory, what did he consider an atom to be?
According to Dalton's atomic theory, what did he consider an atom to be?
Based on Thomson's observations, what did he postulate about the structure of atoms?
Based on Thomson's observations, what did he postulate about the structure of atoms?
Who found the negatively charged particles known as electrons in an atom?
Who found the negatively charged particles known as electrons in an atom?
What did scientists discover about electrons and protons based on their experiments?
What did scientists discover about electrons and protons based on their experiments?
Study Notes
Atomic Theories
- Atoms were postulated to be composed of a positively charged sphere with negatively charged particles embedded in it, according to Thomson's 'plum pudding' theory.
Protons and Electrons
- Positively charged particles called protons were discovered by Rutherford.
- Negatively charged particles known as electrons were found by J.J. Thomson.
Dalton's Atomic Theory
- Atoms of the same element are identical in mass, shape, and size, according to Dalton's atomic theory.
- Dalton proposed that atoms were indivisible, hard, dense spheres.
Atomic Structure
- Based on Thomson's observations, he postulated that atoms have a positively charged sphere with negatively charged particles (electrons) embedded in it.
Experiments and Discoveries
- Scientists discovered that electrons and protons are constituents of atoms, based on their experiments.
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Description
Test your knowledge of atomic structure theories and experiments in this quiz. Explore Dalton's atomic theory, subatomic particles, and key experiments that led to our understanding of the atom's structure.
