 | Chemistry |
| Across 2. solution with an excess of hydronium (H+) ions 4. universal solvent 8. substances in organism that control pH 9. reactions involving a net release of energy 12. made of 2 or more elements bonded together 14. chemically combining elements so their atoms become stable 17. found in the energy levels of an atom 19. positive particle in the nucleus 20. quantity of matter in an object 21. substance dissolved in a solution 22. smallest part of a compound 24. center of an atom Down 1. solution in which no more solute may be dissolved 2. refers to a basic solution 3. symbol for helium 5. neutral particle in the nucleus 6. solution in which water is the solvent 7. found on the left side of an equation 10. hydroxide ion 11. reaction involving a net absorption of energy 13. scale from 0-14 measuring H+ and OH- ion concentration 15. charged atom 16. reactions involving the transfer of electrons between atoms 18. pure substances that cannot be chemically broken down into simpler substances 22. anything that occupies space & has mass 23. stored in chemical bonds |