Structure Of Matter

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Across
  1. 3. Shows the number of atoms involved
  2. 7. Made when 2 or more atoms join together chemically. Simplest form of a chemical compound
  3. 11. Anything that takes up space (volume) and has mass
  4. 13. Smaller than or occurring within an atom,protons (+), neutrons (n) & electrons (-)
  5. 14. Negatively charged subatomic particle found floating outside the nucleus of an atom.
  6. 15. A substance made when different atoms combine chemically to form molecules
  7. 16. Charge of an Electron
  8. 17. Charge of a Neutron
  9. 18. The smallest particle of an element; made of electrons, protons, and neutrons
  10. 19. Common element, found in salt with a atomic number 11 and the symbol Na
  11. 20. An atom that has equal numbers of protons and electrons. It does not hold a charge (neutral).
Down
  1. 1. Charge of a Proton
  2. 2. Positively charged particles located in the nucleus of an atom.
  3. 4. Shows the number of molecules involved
  4. 5. A particular kind of matter with uniform properties
  5. 6. Subatomic particle located in the nucleus of an atom that has no charge.
  6. 8. A pure substance made of only one type of atom. Elements are the building blocks of matter.
  7. 9. Common compound, aka H2O
  8. 10. The center of the atom. Contains protons (+) and neutrons (n).
  9. 12. There is an electrical _______/repulsion between the nucleus (+) and electrons (-)