Chemistry Extra Credit

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Across
  1. 2. and carbon dioxide
  2. 7. neutral subatomic particle
  3. 9. a part or aspect of something abstract, especially one that is essential or characteristic
  4. 10. A bond between atoms or ions that allows molecules to form
  5. 11. negatively charged ion
  6. 12. group 1 on periodic table
  7. 14. negative subatomic particle
  8. 15. a thing that is composed of two or more separate elements; a mixture.
  9. 17. positive subatomic particle
  10. 18. dissolved in water
Down
  1. 1. positively charged ion
  2. 2. group 17 on periodic table
  3. 3. When a compound combines with oxygen gas to form water,
  4. 4. group 2 on periodic table
  5. 5. the basic unit of a chemical element.
  6. 6. A chemical bond formed when two atoms share two
  7. 8. able to be hammered or pressed permanently out of shape without breaking or cracking.
  8. 10. all of the atoms (or ions) are arranged in a regular grid pattern
  9. 13. forms of the same element that contain equal numbers of protons but different numbers of neutrons
  10. 16. group 18 on periodic table