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Atoms

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  • Why does removing an electron require energy?
    The nucleus attracts it strongly
  • A subatomic particle of an atom that is negatively charged and orbits the nucleus extremely fast.
    Electron
  • Are electrons bigger than protons?
    No
  • What charge is the nucleus?
    Positive charge
  • The number of protons in a nucleus is called...
    Atomic number
  • The basic building blocks combine to form...
    Matter
  • The smallest particle that still retains an element’s chemical properties is called…
    Atom
  • Positively charged particle inside the nucleus…
    Proton
  • Why is the nucleus very dense?
    It holds most of the mass
  • Why do protons repel each other?
    They have the same positive charge
  • Protons and neutrons together determine...
    Mass number
  • Why does changing the nucleus create a different element?
    The proton number changes
  • Atoms consist of smaller particles called...
    Subatomic particles
  • What makes up most of an atom's volume?
    Empty space
  • Why are neutrons neutral?
    They have no charge
  • Where are protons found?
    In the nucleus
  • Why are neutrons important in the nucleus?
    They help keep the nucleus stable
  • The number of __________ decides what element an atom is.
    Number of protons
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