Midterm review

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Across
  1. 2. solution pH of 7
  2. 5. specific heat Water resists temperature changes, helping stabilize environments
  3. 8. Positively charged particle in the nucleus
  4. 11. method steps Observation → Question → Hypothesis → Experiment → Data → Conclusion → Communicate
  5. 13. Releases H⁺ in solution; pH < 7
  6. 14. Water molecules stick to each other due to hydrogen bonding
  7. 15. number Number of protons in an atom
  8. 16. bond Weak attraction between hydrogen and an electronegative atom (O or N); not a true bond
  9. 17. Negatively charged particle outside the nucleus
  10. 20. variable The factor that is measured or observed in response to changes
  11. 21. bond Electrons are shared between atoms (e.g., H₂O)
Down
  1. 1. Maintains stable pH in biological systems
  2. 3. solvent Water dissolves many polar and ionic substances
  3. 4. group The group that receives the independent variable
  4. 6. bond Electrons are transferred between atoms (e.g., NaCl)
  5. 7. Accepts H⁺ or releases OH⁻; pH > 7
  6. 9. number Number of protons + neutrons in an atom
  7. 10. Water molecules stick to other surfaces
  8. 12. variable The factor changed or manipulated in an experiment
  9. 18. group The group that does not receive the treatment; used for comparison
  10. 19. Neutral particle in the nucleus