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Questions and Answers

Which subatomic particle has a positive charge?

  • Neutron
  • Proton (correct)
  • Electron
  • Nucleus

Which subatomic particle has a negative charge?

  • Proton
  • Electron (correct)
  • Neutron
  • Photon

Which subatomic particle has no charge?

  • Electron
  • Proton
  • Neutron (correct)
  • Ion

What does the mass of a proton equal?

<p>About 2000 electrons</p> Signup and view all the answers

What does the mass of a neutron equal?

<p>1 proton</p> Signup and view all the answers

What term describes the number of protons in an element?

<p>Atomic Number</p> Signup and view all the answers

What term describes the sum of the protons and neutrons in an element?

<p>Mass Number</p> Signup and view all the answers

What does the mass number minus the atomic number equal?

<p>The number of neutrons</p> Signup and view all the answers

What is the term for an element that has extra neutrons?

<p>Isotope</p> Signup and view all the answers

What is the term for an element that has extra electrons?

<p>Ion</p> Signup and view all the answers

Study Notes

Subatomic Particles

  • Protons carry a positive charge and are found in the nucleus of an atom.
  • Electrons have a negative charge and orbit around the nucleus.
  • Neutrons are neutral particles, also located in the nucleus, with no electrical charge.

Mass of Subatomic Particles

  • The mass of a proton is approximately 2000 times that of an electron.
  • A neutron has a mass equivalent to that of one proton.

Atomic Structures

  • Atomic Number refers to the number of protons in the nucleus of an element, determining the element's identity.
  • Mass Number is the total count of protons and neutrons within an element’s nucleus.

Relationships in Atomic Composition

  • The number of neutrons in an atom can be found by subtracting the atomic number from the mass number.
  • Isotopes are variants of an element that contain additional neutrons compared to the standard atomic form.
  • Ions are formed when an atom gains or loses electrons, resulting in a net charge due to the imbalance of protons and electrons.

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