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5 Written questions

5 Matching questions

  1. phosphorylation reaction
  2. hydrogen bonds
  3. phases of matter
  4. isotope
  5. atomic mass unit
  1. a An atom of the same element that differs only in the number of neutrons
  2. b Weak attractive forces between molecules; important in determining how groups of molecules are arranged
  3. c Physical conditions of matter (solid, liquid, and gas) determined by the relative amounts of energy of the molecules
  4. d A unit of measure used to describe the mass of atoms and is equal to 1.67 x 10^(-24) grams, approximately the mass of 1 proton
  5. e The reaction that takes place when a cluster of atoms, known as a phosphate group is added to another molecule

5 Multiple choice questions

  1. states that all matter is made up of tiny particles that are in constant motion
  2. The central region of an atom
  3. Electrically unbalanced or charged atoms
  4. The science concerns with the study of the composition, structure and properties of matter and the changes it undergoes
  5. A scale used to indicate the concentration of an acid or a base

5 True/False questions

  1. electronA negatively charged particle moving at a distance from the nucleus of an atom; balance it the positive charges of the protons


  2. gascompounds that release hydroxide ions or accept hydrogen ions in a solution


  3. mass numberThe number of protons in an atom


  4. covalent bondforces that combine atoms or ions and hold them together


  5. chemical bondsThe attractive forces between ions of opposite charge