Chemistry Crossword

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Across
  1. 5. The vertical columns in the periodic table
  2. 7. Area around a nucleus where electrons are mostly found
  3. 8. Have a pH less than 7
  4. 9. Two elements replace another to make a product
  5. 10. Atoms of the same element that have different numbers of neutrons
  6. 11. Amount of product actually obtained from a chemical reaction
  7. 13. 2 or more substances that combine to make another
  8. 15. Force of attraction between opposite charges
  9. 18. Substances that are made
  10. 20. Electron
  11. 21. Horizontal rows of elements
  12. 25. Mixture in which different materials can easily be distinguished
Down
  1. 1. Substances that react
  2. 2. Contains 2 or more gases, liquids, or solids substances blended evenly
  3. 3. A table filled with elements in order of atomic numbers
  4. 4. One substance breaks down, into 2 more
  5. 6. One element replaces another to make a product
  6. 8. Number of protons in an atom is equal to a number called blank
  7. 12. Scattering of light by colloidal particles
  8. 14. Positively or negatively charged, covalently bonded group
  9. 16. Two protons and two neutrons
  10. 17. Attraction formed when elements share electrons
  11. 19. Substance reacts with oxygen to make heat and light
  12. 22. produces OH- ions
  13. 23. A substance in which the atoms of 2 or more elements are combined
  14. 24. Numbers in front of each substance in an equation