Basic Chemistry

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Across
  1. 2. Positively charged ion
  2. 3. Common solvent
  3. 5. Substance made of only one type of atom
  4. 6. gas, Group 18 elements (2 words)
  5. 9. The center of an atom
  6. 10. Negatively charged particle
  7. 12. Vertical column in the periodic table
  8. 13. A horizontal row in the periodic table
  9. 14. Common table salt formula
Down
  1. 1. Bond where electrons are shared
  2. 4. The smallest unit of an element
  3. 7. Type of reaction that absorbs heat
  4. 8. pH less than 7
  5. 10. Number, Number of protons in an atom (2 words)
  6. 11. Gas released during photosynthesis
  7. 12. Substance formed in a chemical reaction