Chemistry

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Across
  1. 2. - is the name for the element with atomic number 7 and is represented by the symbol N
  2. 4. - atom or molecule which has a different number of protons than electrons
  3. 6. capacity - quantity of heat needed to raise the temperature of a sample by a specified amount
  4. 7. mass - average mass of atoms of an element
  5. 9. - emitted energy in the form of rays, waves, or particles
  6. 11. - a substance that cannot be subdivided using chemical means
  7. 13. - alkaline earth metal with element symbol Be and atomic number 4
  8. 14. table - tabular arrangement of elements by increasing atomic number, ordered according to trends in recurring properties
Down
  1. 1. - noble gas with element symbol Ne and atomic number 10
  2. 3. - loss of electrons by an atom, molecule or ion in a chemical reaction
  3. 5. number - the number of protons in the nucleus of an atom of an element
  4. 8. - any matter or substance that has mass
  5. 10. - Iron is the name for the element with atomic number 26 and is represented by the symbol Fe
  6. 12. - stable negatively charged subatomic particle
  7. 15. replacement reaction - chemical reaction in which two reactants exchange anions/cations to form two new products using the same ions