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5 Written questions

5 Matching questions

  1. Replacement
  2. Physical Change
  3. Endothermic Reaction
  4. Synthesis
  5. Chemical Equation
  1. a A reaction in which energy is absorbed
  2. b A reaction in which one element replaces another in a compound, or when two elements in different compounds trade places.
  3. c a shorthand way to use chemical symbols and numbers to describe a chemical reaction
  4. d A Chemical Reaction in which two or more simple substances combine to form a new, more complex substance
  5. e Any Change that alters the form or appearance of a substance but that doesn't make the substance into another substance

5 Multiple choice questions

  1. The new materials at the end of a chemicle reaction
  2. The number placed in front of a chemical formula in an equation
  3. A change in matter that produces one ore more new substances
  4. A material that increases the rate of a reaction by lowering the activation energy
  5. Matter is not allowed to enter or leave

5 True/False questions

  1. DecompostionA chemical Reaction that breaks down compounds into simpler products


  2. ConcentrationThe amount of a substance in a given volume


  3. ReactantsThe substances you have at the beginning of a chemical equation


  4. Exothermic ReactionA reaction in which energy is absorbed


  5. Fire TriangleOxygen,Fuel,Heat


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