Chapter 2 Vocabulary Revie

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Across
  1. 2. A charged atom
  2. 3. An attraction between molecules of different substances
  3. 6. Energy needed to get a reaction started
  4. 7. reactant of an enzyme-catalyzed reaction
  5. 8. A substance made up of atoms of two or more different elements joined by chemical bonds
  6. 11. A substance produced in a chemical reaction
  7. 13. the substance in which the solute dissolves
  8. 15. A substance that is dissolved in a solution.
  9. 16. A substance that increases the hydrogen ion concentration of a solution.
  10. 17. A substance that decreases the hydrogen ion concentration in a solution.
  11. 18. center of an atom
  12. 24. small chemical unit that makes up a polymer
  13. 26. basic unit of matter
  14. 27. DNA and RNA
  15. 28. large compound formed from combinations of many monomers
  16. 29. A chemical substance that is present at the start of a chemical reaction
  17. 30. Formed when one or more electrons are transferred from one atom to another
  18. 31. substance that speeds up the rate of a chemical reaction
  19. 32. A combination of two or more substances that are not chemically combined
Down
  1. 1. Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.
  2. 2. Atoms of the same element that have different numbers of neutrons
  3. 4. A subatomic particle that has a negative charge
  4. 5. compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body
  5. 9. monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
  6. 10. A group of atoms bonded together
  7. 12. Attraction between molecules of the same substance
  8. 14. A chemical bond that involves sharing a pair of electrons between atoms in a molecule
  9. 19. the process by which one or more substances change to produce one or more different substances
  10. 20. A mixture in which particles can be seen and easily separated by settling or filtration
  11. 21. Building blocks of protein
  12. 22. A type of protein that speeds up a chemical reaction in a living thing
  13. 23. A homogeneous mixture of two or more substances
  14. 25. compound that prevents sharp, sudden changes in pH