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Discovering The Atom

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    Science
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  • What is the atomic number of this element?
    73
  •  5
  • How many protons does this element have?
    73
  •  5
  • How many neutrons does this element have?
    108
  •  10
  • How many electrons does this element have? (charge=0)
    73
  •  15
  • What type of molecule has a positive charge?
    proton
  •  5
  • What type of charge does a neutron have?
    no charge
  •  5
  • What is the atomic mass of this element?
    207
  •  10
  • How protons does this element have?
    82
  •  10
  • How many neutrons does this element have?
    125
  •  20
  • How many electrons does this element have? (charge = -10)
    92
  •  25
  • Why are electrons outside of the nucleus?
    Electrons are outside the nucleus and orbit about it because they are attracted to the positive charge in the nucleus.
  •  15
  • What molecules are inside of the nucleus of an atom?
    neutron and protons
  •  15
  • What is an atom?
    An atom is the smallest unit of matter.
  •  15
  • What is matter?
    A physical substance that has mass or takes up space.
  •  20
  • What is an example of matter that can be a solid, liquid, and gas?
    water
  •  20
  • Who believed matter was made up of water, earth, fire, and air?
    aristotle
  •  20