Atomic Structure Basics

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Questions and Answers

What is the central part of an atom called?

  • Proton
  • Electron
  • Nucleus (correct)
  • Neutron

What is the positively charged particle in an atom?

  • Ion
  • Electron
  • Neutron
  • Proton (correct)

What is the negatively charged particle in an atom?

  • Electron (correct)
  • Proton
  • Nucleus
  • Neutron

What is the sum of protons and neutrons in an atom called?

<p>Mass number (D)</p> Signup and view all the answers

What determines the chemical properties of an atom?

<p>Number of protons (D)</p> Signup and view all the answers

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Study Notes

Atomic Structure

  • The central part of an atom is called the nucleus.
  • The positively charged particle in an atom is called a proton.
  • The negatively charged particle in an atom is called an electron.

Atomic Composition

  • The sum of protons and neutrons in an atom is called the mass number.

Chemical Properties

  • The chemical properties of an atom are determined by the number of electrons, which is equal to the number of protons.

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