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Atoms

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  • How do you find the number of electrons in an atom?
    It is equal to the atomic number
  • More than one atom stuck together creates a ________________.
    molecule
  • Use your periodic table: Which atom has 6 protons?
    Carbon
  • True or False: only living things are made of atoms
    False - ALL things are made of atoms
  • True or False: Atoms are mostly empty space
    True
  • Name five different atoms.
    (Teacher checks)
  • Use your periodic table: How many electrons does calcium have?
    20
  • Two hydrogen atoms and one oxygen atom stuck together creates what molecule?
    water (H2O)
  • How do you find the number of protons in an atom?
    It is equal to the atomic number
  • What happens when the number of protons or electrons in an atom changes?
    You get a different type of atom.
  • The center of an atom is called the __________.
    nucleus
  • True or False: There are over 500 kinds of atoms
    False - There are over 100 kinds of atoms
  • How do you find the number of neutrons in an atom?
    atomic mass - atomic number
  • How many electrons in an oxygen atom?
    8
  • How many neutrons in an atom of gold?
    118 (197-79=118)
  • True or false: Hydrogen is the most abundant atom on Earth
    True
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