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5 Written questions

5 Matching questions

  1. noble gases
  2. Law of Conservation of Mass
  3. molar volume of a gas
  4. metals
  5. complete reaction
  1. a obvious when finished
  2. b the # of atoms of each element must be the same in both the reactants and the products of a chemical reaction
  3. c -at STP (standard temperature and pressure) *0 degrees Celsius and 1 atm
    - 1 mol has a volume of 22.L
  4. d -elements in group 18
  5. e -all on the left side of the staircase

5 Multiple choice questions

  1. the substance that is usually dissolved(sugar or salt)
  2. a subtance with 2 or more different types of particles inside of it
  3. -an additional chemical that is added
    -increases the rate of reaction by decreasing the activation energy
    -it is not consumed in the reaction and can be reused
  4. 1. increase temperature
    2. increase pressure
    3. decrease volume
    4. increase # of particles
  5. -elements in group 1 except Hydrogen

5 True/False questions

  1. ways to decrease the rate of reaction1. increase temperature
    2. increase pressure
    3. decrease volume
    4. increase # of particles

          

  2. nonmetal-all on the right side of the staircase

          

  3. What happens during a chemical reaction?a type of change, in which, macroscopically: one or more different substances form that were not there originally; and, nanoscopically:one or more particles becomes one or more different particles that were not there originally -- original substances are no longer present

          

  4. compoundthe substance that usually dissolves the solute *water

          

  5. halogensthe substance that usually dissolves the solute *water