Colton Sand week 6 vocabulary

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Across
  1. 1. :a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
  2. 3. table : The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson.
  3. 5. mass : mass number, in nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom.
  4. 6. : a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
  5. 8. number : the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
Down
  1. 2. : a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
  2. 4. : A substance that cannot be broken down into simpler substances by chemical means.
  3. 5. : the basic unit of a chemical element.
  4. 6. :A period is the name given to a horizontal row of the periodic table .
  5. 7. : The vertical column of the periodic table that signifies the number of valence electrons in an element.