Biology3 Lab2

The flashcards below were created by user kjel on FreezingBlue Flashcards.

  1. atom
    the smallest particle of an element that retains all the properties of that element
  2. element
    a substance that cannot be decomposed into any other subtances by chemical means
  3. 6 major elements that make up 99% of the elements in all living tissue
  4. atomic number
    the characteristic number of protons for each element
  5. capacity for first 4 energy shells:
    • 1st: 2
    • 2nd: 8
    • 3rd: 18
    • 4th: 32
  6. molecule
    a group of chemically combined atoms
  7. diatomic molecule
    a molecule composed of a single element and two atoms
  8. compound
    a molecule of at least two different elements
  9. chemical bond
    a force that holds atoms together
  10. covalent bond
    • a bond formed when one atom shares electron(s) with another atom.
    • generally a very strong bond
  11. ionic bonding
    when one atom donates an electron to another, resulting in oppositely charged ions
  12. ion
    a charged particle
  13. hydrogen bonding
    a weak attraction between molecules or parts of very large molecules
  14. enzyme
    • a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
    • reduces the amount of energy required to complete the reaction ==> increases the speed of reaction
  15. identify the components of chemical reactions
    • reactants
    • enzyme
    • products
  16. chemical reaction components of tyrosinase:
    pyrocatechol + oxygen === tyrosinase ==> quinone + water
  17. pH neutral
    a substance that has a pH of exactly 7
  18. acid
    • substances that have a pH of less than 7
    • an acid releases H ions when placed in water
  19. base
    • a substance that has a pH of more than 7
    • bases release hydroxide ions (OH) when placed in water
  20. symbol for a hydroxide ion:
  21. symbol for a hydrogen ion:
  22. if NaOH is a base, how would it dissociate?
    NaOH ==> Na+ + OH-
Card Set
Biology3 Lab2
Biology3 Lab2
Show Answers