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5 Written questions

5 Matching questions

  1. nucleic acid
  2. pH
  3. isotope
  4. polymer
  5. ion
  1. a two or more atoms of the same element having different numbers of neutrons.
  2. b complex macromolecule that stores and communicates genetic information.
  3. c large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
  4. d atom that is negatively or positively charged because it have lost or gained one or more electrons.
  5. e measure of the concentration of hydrogen ions (H+) in a solution.

5 Multiple choice questions

  1. specific place where a substrate binds on an enzyme.
  2. energy-requiring process by which atoms or groups of atoms in substances are changed into different substances
  3. combination of two or more different substances in which each substance keeps its individual characteristics; can have a uniform composition (homogeneous) or have distinct areas of substances (heterogeneous).
  4. pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means
  5. building block of matter; contains subatomic particles—neutrons, protons, and electrons

5 True/False questions

  1. electronparticle without a charge in an atom's nucleus


  2. compoundpure substance with unique properties; formed when two or more different elements combine.


  3. macromoleculelarge molecule formed by joining smaller organic molecules together


  4. productsubstance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.


  5. catalystbuilding block of matter; contains subatomic particles—neutrons, protons, and electrons


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