Biology Ch. 1 & 2 Extra Credit

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Across
  1. 5. explains something in the world in a workable way
  2. 8. the substance we end with after a reaction
  3. 10. substance that dissolves in water & accepts hydrogen
  4. 11. pure substance made of 2 or more elements
  5. 12. substance used to block a substrate
  6. 14. pure substances made of only one kind of atom
  7. 15. the immaterial stuff that gets things done
  8. 16. explains a set of observations
  9. 18. the measure of the speed that particles move
  10. 20. the physical stuff that make up the universe
  11. 23. idea that the environment is fragile
  12. 24. describes how phenomena relate to each other
Down
  1. 1. study of ethical situations in biology
  2. 2. molecule that binds to enzyme
  3. 3. a way to test a hypothesis
  4. 4. basic building block of matter
  5. 6. stored chemical energy that holds atoms together
  6. 7. the study of life
  7. 9. the dispersal of energy
  8. 13. the smallest part of a covalent compound
  9. 17. simple, testable statement
  10. 19. a class of catalyst that naturally occurs
  11. 21. the perspective that a person uses to view
  12. 22. substance that dissolves in water & gives hydrogen