CHEMISTRY CROSSWORD PUZZLE

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Across
  1. 3. "Makes up most of the air we breathe, but we can't use it directly."
  2. 7. A slow chemical reaction between iron, water, and oxygen.
  3. 10. A negatively charged particle that moves around the nucleus.
  4. 11. A chemical reaction in which a substance burns in oxygen to release heat.
  5. 13. An energy level where electrons revolve around the nucleus in an atom.
  6. 16. The mixing of atomic orbitals to form new orbitals for bonding.
  7. 19. A combination of two or more substances that do not chemically combine.
  8. 21. The process of forming solid crystals from a solution.
  9. 23. Relationship Similarity between certain elements diagonally placed in the periodic table, like lithium and magnesium.
  10. 24. A pure substance made up of only one type of atom.
  11. 26. The process in which a single ligand forms multiple bonds with a central metal ion.
  12. 27. The chemical decomposition of a substance by passing electric current through it.
  13. 28. A substance with a sour taste and pH less than 7; turns blue litmus red.
  14. 29. A unit of concentration defined as moles of solute per liter of solution.
Down
  1. 1. Tendency of an atom to attract a shared electron pair in a chemical bond.
  2. 2. A phenomenon where a compound exists in two forms by the shifting of a hydrogen atom and a double bond.
  3. 4. A neutral particle found in the nucleus of an atom.
  4. 5. The smallest unit of matter that retains the properties of an element.
  5. 6. Mass per unit volume; determines how heavy something is for its size.
  6. 8. The existence of an element in more than one physical form in the same state (like diamond )
  7. 9. The amount of space an object or substance occupies.
  8. 12. A fixed circular path in Bohr’s model where electrons revolve around the nucleus.
  9. 14. Affinity The energy change when an atom gains an electron to form a negative ion.
  10. 15. Regions in an atom where there is a high probability of finding electrons.
  11. 17. moment Moment A measure of the separation of positive and negative charges in a molecule; usually shown in Debye.
  12. 18. Unequal sharing of electrons in a molecule causes this type of charge separation.
  13. 20. A state in a chemical reaction where forward and reverse reactions occur at the same rate.
  14. 22. A mixture of two or more metals, or a metal and a non-metal.
  15. 25. Two or more atoms bonded together.
  16. 26. A solid substance with a regular and repeating arrangement of particles.