Ch 2 Anatomy Vocab Review

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Across
  1. 5. When an atom gives up or gains electrons it becomes a(n) ________.
  2. 6. __________ molecules are molecules who have opposing charges at each end.
  3. 9. A change in state without altering its basic nature.
  4. 12. When two or more atoms share electrons, they form a ___________.
  5. 14. Positively charged particles.
  6. 16. When different elements combine we call that a ____________.
  7. 17. __________ energy is the energy of motion.
  8. 19. When an ion or molecule has an unpaired electron in its outer shell.
  9. 21. Each element is made of _________.
  10. 22. Negatively charged particles.
  11. 23. A negatively charged atom and positively charged atom will be electrically attracted to each other through a(n) _______ bond.
  12. 24. A liquid or gas where material has been dissolved in.
Down
  1. 1. Has a definite volume but not shape.
  2. 2. Are proteins that speed up chemical reactions.
  3. 3. The shared electron between the two atoms is called a __________ bond.
  4. 4. Has no definite shape or volume.
  5. 7. A change that alters its basic nature.
  6. 8. Particles with no charge.
  7. 10. When atoms interact by exchanging electrons, they form ________ bonds.
  8. 11. Has a definite shape and volume.
  9. 13. Are chemical compounds in the body that help maintain proper pH levels.
  10. 15. _________ energy is stored energy.
  11. 18. Atoms of the same element, that have different number of neutrons.
  12. 20. The ability to do work.