Biology Chapter 2 Terms - Brendan Warren

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Across
  1. 2. Simple carbohydrates
  2. 3. Basic building block of matter
  3. 4. Molecules that have a central carbon bonded to four groups
  4. 8. The tendency of energy to disperse
  5. 9. Pure substance made up of only one kind of atom
  6. 10. Stored chemical energy that holds two atoms together
  7. 11. A substance that takes part in and undergoes change during a reaction
  8. 12. Organic compounds made of carbons, hydrogens, and oxygens
  9. 13. The attraction of molecules for each other
  10. 15. Changes that change a matter's identity
  11. 17. Non-polar molecules
  12. 18. A substance produced by a living organism that acts as a catalyst to bring about a specific reaction
Down
  1. 1. A substance that is formed as the result of a chemical reaction
  2. 3. The joining of two different substances due to attractive forces that hold them
  3. 5. A class of organic compounds that serve as the building blocks for the information storage molecules DNA and RNA
  4. 6. The measure of average speed of particles within a substance
  5. 7. Changes that don't change a matter's identity
  6. 14. Ability to do work
  7. 15. A substance that provides an alternate route from reactants to products that doesn't require as much energy
  8. 16. A pure substance made of two or more element chemically combined