Chemistry Vocabulary Crossword Puzzle

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Across
  1. 3. a chemical reaction that absorbs heat
  2. 5. substance that does the dissolving in a chemical solution
  3. 9. chemical bond between atoms caused by an electrostatic force in opposite charged ions
  4. 12. expression which states the number and types of atoms in a molecule
  5. 13. part of the atomic nucleus that has a charge of +1
  6. 14. chemical species formed when two or more elements form a chemical bond
  7. 15. a substance that cannot be subdivided and is identified by the number of protons in its atoms
  8. 16. chemical mass unit equal to Avogadro's number
  9. 20. any element found in the last column of the periodic table
  10. 21. part of the atomic nucleus that has a charge of -1
  11. 22. whole number that is the sum of protons and neutrons in the atomic nucleus
  12. 24. outer electron that is most likely to participate in a bond formation or a chemical reaction
  13. 25. part of the atomic nucleus that has a charge of 0
  14. 26. measure of hydrogen ion in a solution showing the acidity or basicity of a substance
  15. 27. a chemical species that accepts protons
  16. 28. chemical bond between atoms where electrons are more or less evenly shared
Down
  1. 1. a chemical reaction that releases heat
  2. 2. the arrangement of elements by increase of their atomic number
  3. 4. homogenous mixture of two or more substances
  4. 6. atoms that have the same number of protons but different amount of neutrons changing its atomic weight
  5. 7. the number of protons in the nucleus of an atom of an element
  6. 8. a chemical species that donates protons
  7. 10. any element found in the 1st column of the periodic table
  8. 11. substance that is dissolved in a chemical solution
  9. 17. substance formed as a result of a chemical reaction
  10. 18. starting material for a chemical reaction
  11. 19. any element found in the 2nd column of the periodic table
  12. 23. the ability to do work