Science Whiz

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Across
  1. 3. A physical method used to separate mixtures
  2. 4. The small (offset) number that tells the number of atoms of an element in each molecule
  3. 12. A mixture of larger particles that are visible and will separate out
  4. 13. Which type of bond is described as electrons in a matrix of positively charged atoms
  5. 15. What is the Universal Solvent
  6. 16. Metals are elements that will _____ electrons
  7. 17. Which type of electron occupies the outermost energy level or shell of an atom?
  8. 19. An atom that has a positive or negative electrical charge
  9. 20. Substance (2words) what does a chemical change always result in
  10. 22. The number in front of the molecules symbol which indicates the number of molecules of a substance
  11. 24. The largest amount of a solute that can dissolve in a certain amount of solvent
  12. 25. A homogeneous mixture of larger particles that remain suspended but form lumpy or fluffy masses when vinegar is added
  13. 26. The solubility of a solute is the largest amount of solute that can dissolve in a certain quantity of ____
  14. 29. A metal such as copper or silver is transferred from one surface to another using electric current
  15. 30. An atom with a positive charge
Down
  1. 1. An atom with a negative charge
  2. 2. A solid that forms as a result of a chemical reaction when two solutions are mixed.
  3. 5. The periodic table is organized so that atoms of elements with the same number of valence electrons are in _____
  4. 6. Are broken in existing molecules or compounds
  5. 7. Nonmetals are elements that will _____ electrons
  6. 8. Which type of bond is responsible for the attraction of one water molecule to another
  7. 9. Homogeneous mixture formed when substances dissolve
  8. 10. The result ( new substance)from a chemical reaction
  9. 11. Are bonds within a molecule, that hold the molecule together
  10. 14. What compounds are formed from two nonmetals
  11. 18. A reaction of a substance with oxygen to form an oxide with heat and light (fire) also burning
  12. 21. Electric current is passed through a substance to effect a chemical change
  13. 23. How many valence electrons do most elements want?
  14. 27. The original substance in a chemical reaction either disappears or diminishes
  15. 28. Dissolved in the solvent