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5 Written Questions

5 Matching Questions

  1. Precipitate
  2. Chemical Equation
  3. Open System
  4. Physical Change
  5. Combustion
  1. a A rapid reaction between oxygen and fuel that results in fire
  2. b Any Change that alters the form or appearance of a substance but that doesn't make the substance into another substance
  3. c Matter can enter or escape to the surroundings
  4. d a shorthand way to use chemical symbols and numbers to describe a chemical reaction
  5. e A solid that forms from solution during a chemical reaction

5 Multiple Choice Questions

  1. A material used to decrease the rate of a reaction
  2. During a Chemical Reaction Matter is not created or destroyed
  3. The amount of a substance in a given volume
  4. A Chemical Reaction in which two or more simple substances combine to form a new, more complex substance
  5. HINCL BROF

5 True/False Questions

  1. CatalystA material that increases the rate of a reaction by lowering the activation energy

          

  2. Activation energyThe minimum amount of energy needed to start a chemical reaction

          

  3. The Basic ingredient in a FireworkA change in matter that produces one ore more new substances

          

  4. ProductsA material that releases energy when it burns

          

  5. Fire TriangleOxygen,Fuel,Heat

          

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