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Building blocks

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  • what does the mass number tell you
    how many protons and neutrons there are in the atom
  • what is an atom
    the basic building blocks of all materials
  • how many electrons can go on the first shell
    2
  • C
    carbon
  • what is an element
    a substance made up of only one type of atom
  • How many electrons can go on the second and third shell
    up to 8
  • K
    potassium
  • what does the atomic number tell us
    how many protons (which is the same as the number of electrons) there are in one atom of the element
  • what is a compound
    When a molecule is made up of two or more different types of elements chemically combined
  • what is a molecule
    is formed when two or more atoms join (bond) together chemically
  • what was the name of the scientist that first suggested the electrons were on the shell orbiting the nucleus
    Niels Bohr
  • Cl
    chlorine
  • what is the charge of the proton
    positive
  • what is the periodic table
    shows a list of all the elements
  • Na
    sodium
  • what is the mass of an electron
    1/1840 amu
  • where is the neutrons location
    nucleus
  • Be
    Beryllium
  • what are the sub-atomic particles
    protons, neutrons and electrons
  • O
    oxygen