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5 Written questions

5 Matching questions

  1. solute
  2. ways to increase the rate of reaction
  3. endothermic
  4. alkaline earth metals
  5. solution
  1. a the substance that is usually dissolved(sugar or salt)
  2. b -process that absorbs energy
    -energy is the reactant
    -usually, but not always, it lowers the temperature of the surroundings
    *graph starts from low to high
    *activation energy is the entire graph
  3. c 1. increase temperature
    2. increase pressure
    3. decrease volume
    4. increase # of particles
  4. d a mixture where the substances are dissolved
  5. e -elements in group 2

5 Multiple choice questions

  1. -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
  2. pure substance made from two or more elements and can be broken down into separate elements
  3. when there stops being an observable change in a system, either static or dynamic
  4. -273 degrees Celsius, 0 degrees Kelvin
  5. make more reactants and using more products

5 True/False questions

  1. La Chatelier's Principle-changing equilibrium
    idea: if you have reaction @ chemical equilibrium, w/e you do, equilibrium will adjust to reduce whatever you added


  2. molethe substance that is usually dissolved(sugar or salt)


  3. catalyst-all on the left side of the staircase


  4. semimetals/metalloids-elements in group 1 except Hydrogen


  5. What happens during a chemical reaction?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.