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5 Written questions

5 Matching questions

  1. Fuel
  2. Activation Energy
  3. Concentration
  4. Closed System
  5. Physical Property
  1. a A system in which no matter is allowed to enter or leave
  2. b The minimum amount of energy needed to get a chemical reaction started
  3. c The amount of one material in a certain volume of another material
  4. d A material that releases energy when it burns
  5. e A characteristic of a pure substance that can be observed without changing it into another substance

5 Multiple choice questions

  1. A material that increases the rate of a reaction by lowering the activation energy
  2. A chemical reaction that breaks down compounds into simpler products
  3. A change in a substance that does not change its identity
  4. A change in which on or more substances combine or break apart to form new substance
  5. A characteristic of a pure substance that describes its ability to change into a different substance

5 True/False questions

  1. ProductA material that releases energy when it burns

          

  2. PrecipitateA substance that undergoes change in a chemical reaction

          

  3. CoefficientA number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in the reaction

          

  4. Conservation of MatterThe amount of one material in a certain volume of another material

          

  5. ChemistryAnything that has mass and occupies space

          

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