Class 9 Chemistry: Structure of Atom Quiz

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3 Questions

What is the central part of an atom that contains protons and neutrons?

Nucleus

Which model of the atom proposed the existence of negatively charged particles (electrons) embedded in a positively charged sphere?

Plum pudding model

Which term refers to atoms of the same element that have the same number of protons but different numbers of neutrons?

Isotopes

Study Notes

Atomic Structure

  • The central part of an atom that contains protons and neutrons is the nucleus.

Atomic Model

  • The Plum Pudding Model proposed the existence of negatively charged particles (electrons) embedded in a positively charged sphere.

Atomic Variations

  • Atoms of the same element that have the same number of protons but different numbers of neutrons are referred to as isotopes.

Test your knowledge about the structure of an atom, including topics like the central part of an atom, protons, Bohr model, JJ Thomson's model, valency, isotopes, and isobars. Answer questions related to the models of the atom and the characteristics of its components.

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