Biology Chepter 2

  1. Matter
    anything that takes up space
  2. Element
    • sustance that cannot be broken down into other
    • substences
  3. Compound
    consisting of two or more different elements in a fixed ratio- characteristics different than the indivigual element
  4. Essential Elements
    • things that an organism needs to live healthfuly and to reproduce- oxygen, carbon,
    • hydrogen, nitrogen ect.
  5. Trace Elements
    elements only needed in minute quantities
  6. Atomic Number
    number of protons
Author
Anonymous
ID
101888
Card Set
Biology Chepter 2
Description
chem basics
Updated