The Chemical Vocab

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Across
  1. 2. A chemical bond formed when two atoms share pairs of electrons.
  2. 5. A weak attraction between a slightly positive hydrogen atom in one molecule and a slightly negative atom in another.
  3. 6. A molecule made of amino acids that is needed for the body to function properly.
  4. 7. A substance that increases the rate of a chemical reaction without being consumed by the reaction.
  5. 9. The building blocks that combine to form proteins.
  6. 11. A waxy, fat-like substance made by the liver that is essential for cell function.
  7. 12. The basic building block of all matter, composed of protons, neutrons, and electrons.
  8. 13. A large molecule, such as DNA or RNA, that carries genetic information.
  9. 17. Fatty, oily, or waxy compounds that are insoluble in water and store energy.
  10. 18. A substance made from two or more different elements that are chemically bonded.
  11. 19. In chemistry, a compound that contains carbon-hydrogen bonds.
  12. 22. A property of a molecule that repels water.
  13. 23. A protein that acts as a catalyst to speed up specific chemical reactions in the body.
  14. 26. A particle with a positive electrical charge located in an atom's nucleus.
  15. 27. A chemical bond formed by the electrical attraction between oppositely charged ions.
  16. 28. A substance that accepts hydrogen ions and has a pH greater than 7.
  17. 29. A large carbohydrate molecule composed of many monosaccharide units joined together.
  18. 33. A particle found in an atom's nucleus that has no electrical charge.
  19. 34. A very large molecule, such as a protein or nucleic acid, that is built from smaller units.
Down
  1. 1. The simplest form of a carbohydrate, or a "simple sugar".
  2. 3. shell An orbital path or energy level that electrons follow around an atom's nucleus.
  3. 4. A property of a molecule that is attracted to and dissolves in water.
  4. 8. The minimum amount of energy required to start a chemical reaction.
  5. 10. An atom or molecule that has a net positive or negative electrical charge.
  6. 12. substance that donates hydrogen ions and has a pH less than 7.
  7. 14. A variant of a chemical element with the same number of protons but a different number of neutrons.
  8. 15. A particle with a negative electrical charge that orbits an atom's nucleus in shells.
  9. 16. Sugar molecules that serve as the body's main source of energy.
  10. 20. A molecule that is the basic building block of DNA and RNA.
  11. 21. A process where substances rearrange their atoms to form new substances with different properties.
  12. 24. A chemical bond that links two amino acids together.
  13. 25. The molecule that an enzyme acts upon in a chemical reaction.
  14. 30. A pure substance made of only one type of atom that cannot be broken down chemically.
  15. 31. A measure of how acidic or basic a substance is, ranging from 0 to 14.
  16. 32. Two or more atoms bonded together.