Basic Chemistry

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Across
  1. 7. The element represented by N
  2. 11. The smallest unit of an element
  3. 12. An ion with a positive charge
  4. 13. HCO3-
  5. 15. The element represented by O
  6. 16. CO2
  7. 19. The total number of protons and neutrons in an atom's nucleus
  8. 20. Found in the nucleus of an atom
  9. 22. When an atom or molecule gains or loses electrons
  10. 23. The element represented by Na
  11. 24. A chemical reaction in which an atom or molecule gains electrons
  12. 25. The bond forms when oppositely charged ions attract each other
  13. 26. The type of bond forming NaCl
Down
  1. 1. Cl-
  2. 2. A substance that resists changes in pH
  3. 3. The bond that connects complementary bases between two DNA strands
  4. 4. A weak bond formed when a hydrogen atom, already covalently bonded, is attracted to another electronegative atom like O or N
  5. 5. Na+
  6. 6. The number of protons in the nucleus of an atom, which determines the element
  7. 8. The type of bond forming H20
  8. 9. Atoms of the same element with different numbers of neutrons
  9. 10. The element represented by C
  10. 11. An ion with a negative charge
  11. 14. A type of bond where electrons are shared between atoms
  12. 15. A chemical reaction in which an atom or molecule loses electrons
  13. 17. O2
  14. 18. The element represented by K
  15. 21. This is the fear of water