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5 Written questions

5 Matching questions

  1. Closed System
  2. Inhibitor
  3. Decomposition
  4. Product
  5. Endothermic Reaction
  1. a A reaction that absorbs energy in the form of heat
  2. b A chemical reaction that breaks down compounds into simpler products
  3. c A substance formed as a result of a chemical reaction.
  4. d A material that decreases the rate of a reaction
  5. e A system in which no matter is allowed to enter or leave

5 Multiple choice questions

  1. A 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
  2. The principle stating that matter is not created or destroyed during a chemical reaction
  3. A characteristic of a pure substance that can be observed without changing it into another substance
  4. A change in a substance that does not change its identity
  5. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places

5 True/False questions

  1. SynthesisA chemical reaction in which two or more simple substances combine to form a new, more complex substance

          

  2. PrecipitateA solid that forms from a solution during a chemical reaction

          

  3. CombustionA chemical reaction that breaks down compounds into simpler products

          

  4. Exothermic ReactionA reaction that absorbs energy in the form of heat

          

  5. Open SystemA system in which no matter is allowed to enter or leave

          

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