BIO 103 Quiz 2

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Across
  1. 1. In a chemical reaction, the state in which the rate of the forward reaction equals the rate of the reverse reaction
  2. 3. A chemical element required for an organism to survive, grow, and reproduce
  3. 5. The three dimensional space where an electron is fond 90% of the time
  4. 6. The making and breaking of chemical bonds, leading to changes in the composition of matter
  5. 7. The capacity to cause change, especially to do work
  6. 12. A covalent bond between atoms that differ in electronegativity, such that shared electrons are pulled more closely to the more electronegative atom.
  7. 14. A negatively charged ion
  8. 15. A subatomic particle with no charge
  9. 17. A material resulting from a chemical reaction
  10. 18. A positively charged ion
Down
  1. 1. the attraction of a given atom for the electrons in a covalent bond
  2. 2. A starting material in a chemical reaction
  3. 4. A compound resulting from the formation of an ionic bond
  4. 8. A subatomic particle with a negative charge
  5. 9. elements are those required by an organism in only minute quantities are called ______.
  6. 10. A subatomic particle with a positive charge
  7. 11. A type of weak chemical bond formed when the partial charge of H in a polar covalent bond is attracted to a partial negative charge in a different atom.
  8. 13. Covalent bonds between two atoms that are equally electronegative are called _______.
  9. 16. A substance that cannot be broken down into any other substance by chemical reactions