Chemistry

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Across
  1. 5. a group of two or more atoms bonded together
  2. 7. a starting substance in a chemical reaction
  3. 8. a sour taste substance that releases hydrogen ions
  4. 9. the amount of matter in a substance
  5. 10. a positively charged particle found in the nucleus
  6. 11. a negatively charged particle that moves around the nucleus
  7. 12. the smallest unit of matter
Down
  1. 1. a unit used to measure the amount of substance (6.022*10^23 particles)
  2. 2. the calculation of quantities in chemical reactions
  3. 3. a neutral particle found in the nucleus
  4. 4. a substance formed in a chemical reaction
  5. 6. a slippery feeling substance that accepts hydrogen ions