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5 Written questions

5 Matching questions

  1. exothermic
  2. absolute zero
  3. mixture
  4. metals
  5. collision theory of particles
  1. a -all on the left side of the staircase
  2. b -273 degrees Celsius, 0 degrees Kelvin
  3. c -process that releases energy
    -energy is the product
    -usually, but not always, this raises
    *graph starts from high to low
    *activation energy is only first bump
  4. d particles react when they collide
  5. e a subtance with 2 or more different types of particles inside of it

5 Multiple choice questions

  1. the substance that usually dissolves the solute *water
  2. -rate is constant (rate=0, beaker is not changing)
    -no more reactions possible bc forward and reverse reactions can occur
    -no more reactants
  3. make more reactants and using more products
  4. # of moles/# of liters of soln

    *molarity abbreviated with M
    *when its a gas: 1mol/22.4L of soln
  5. During a chemical reaction, the reactants (starting chemicals) interact when they are brought together. Sometimes other conditions are needed (heat, a catalyst, etc) and sometimes the reaction will be spontaneous.

    During the reaction, the chemical bonds of one or more of the reactants. change and are reconfigured/combined with atoms or parts of other molecules from other reagents and form new product chemicals. All of the atoms of the reactants are preserved in the products, just in the form of different reaction product compounds. Heat may also be consumed or generated by the reaction. The products likely have different properties than the reactants.

5 True/False questions

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

          

  2. molar massthe mass is grams of 1 mole of particles of a substance

          

  3. endothermic-process that releases energy
    -energy is the product
    -usually, but not always, this raises
    *graph starts from high to low
    *activation energy is only first bump

          

  4. chemical reactionobvious when finished

          

  5. Law of Conservation of Massthe mass is grams of 1 mole of particles of a substance