Chemistry by Henry

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Across
  1. 1. any substance that has mass and takes up space by having volume
  2. 3. atoms and molecules.
  3. 5. An atom is the basic building block of chemistry.
  4. 6. substance that cannot be broken down into any other substance.
  5. 7. thermal energy transferred from a hotter system to a cooler system that are in contact
  6. 8. Energy is the ability to do work.
  7. 9. atomic number, atomic mass, and chemical reactivity
  8. 11. a group of two or more atoms that form the smallest identifiable unit
  9. 13. an atom or molecule with a net electrical charge.
  10. 14. subatomic particle, symbol n or n 0
Down
  1. 1. any group of substances with strong thermal and electrical conductivity
  2. 2. matter consists of elementary particles which are the antiparticles of those making up normal matter.
  3. 3. subatomic particles with a positive electrical charge
  4. 4. any of a material's properties that becomes evident during, or after, a chemical reaction
  5. 9. any substance composed of identical molecules consisting of atoms of two or more chemical elements.
  6. 10. subatomic particles with a negative one elementary electric charge.
  7. 12. a material made up of two or more different chemical substances