CHEMISTRY CROSSWORD PUZZLE

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Across
  1. 3. A negatively charged particle that moves around the nucleus.
  2. 5. A phenomenon where a compound exists in two forms by the shifting of a hydrogen atom and a double bond.
  3. 9. The chemical decomposition of a substance by passing electric current through it.
  4. 10. A substance with a sour taste and pH less than 7; turns blue litmus red.
  5. 13. "Makes up most of the air we breathe, but we can't use it directly."
  6. 14. A neutral particle found in the nucleus of an atom.
  7. 19. An energy level where electrons revolve around the nucleus in an atom.
  8. 21. The process of forming solid crystals from a solution.
  9. 23. Mass per unit volume; determines how heavy something is for its size.
  10. 25. A unit of concentration defined as moles of solute per liter of solution.
  11. 26. A state in a chemical reaction where forward and reverse reactions occur at the same rate.
  12. 28. The amount of space an object or substance occupies.
  13. 29. A fixed circular path in Bohr’s model where electrons revolve around the nucleus.
Down
  1. 1. A chemical reaction in which a substance burns in oxygen to release heat.
  2. 2. Regions in an atom where there is a high probability of finding electrons.
  3. 4. Substance that speeds up a reaction without being used up
  4. 6. A combination of two or more substances that do not chemically combine.
  5. 7. Two or more atoms bonded together.
  6. 8. The existence of an element in more than one physical form in the same state (like diamond )
  7. 11. The smallest unit of matter that retains the properties of an element.
  8. 12. Unequal sharing of electrons in a molecule causes this type of charge separation.
  9. 15. A slow chemical reaction between iron, water, and oxygen.
  10. 16. A mixture of two or more metals, or a metal and a non-metal.
  11. 17. The process in which a single ligand forms multiple bonds with a central metal ion.
  12. 18. Atom or molecule with an electric charge.
  13. 20. A heavy, poisonous metal.
  14. 21. A solid substance with a regular and repeating arrangement of particles.
  15. 22. The mixing of atomic orbitals to form new orbitals for bonding.
  16. 24. A pure substance made up of only one type of atom.
  17. 27. A reaction involving both oxidation and reduction."