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5 Written questions

5 Matching questions

  1. energy level
  2. chemical equillibrium
  3. orbital
  4. hydrogen bond
  5. mass number
  1. a hydrogen atom covalently bonded to one electronegative atom is also attraced to another electronegative atom
  2. b sum of protons plus neutrons in nucleus
  3. c point at which reactions offset one another exactly, no effect on concentrations of reactants and products
  4. d three-dimensional space where an electron is found 90% of the time
  5. e different states of potential energy for electrons in an atom

5 Multiple choice questions

  1. one atom is more electronegative than another
  2. weak and occur only when atoms and molecules are very close together
  3. positively charged ion
  4. bonding capacity, equals number of unpaired electrons in the atom's outermost shell
  5. further abbreviated formula

5 True/False questions

  1. reactantstarting materials

          

  2. double covalent bondsharing two pairs of valence electrons

          

  3. valence shellbonding capacity, equals number of unpaired electrons in the atom's outermost shell

          

  4. potential energyenergy that matter stores because of its position or location

          

  5. trace elementsubstance that cannot be broken down to other substances by chemical reactions