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5 Written questions

5 Matching questions

  1. Replacement
  2. Synthesis
  3. Physical Property
  4. Chemistry
  5. Activation Energy
  1. a A characteristic of a pure substance that can be observed without changing it into another substance
  2. b A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  3. c The minimum amount of energy needed to get a chemical reaction started
  4. d A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  5. e The study of the properties of matter and how matter changes

5 Multiple choice questions

  1. A system in which no matter is allowed to enter or leave
  2. A short, easy way to show a chemical reaction, using symbols.
  3. A substance formed as a result of a chemical reaction.
  4. A material that increases the rate of a reaction by lowering the activation energy
  5. A chemical reaction that breaks down compounds into simpler products

5 True/False questions

  1. Exothermic ReactionA reaction that releases energy in the form of heat


  2. MatterA material that releases energy when it burns


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


  4. Chemical ChangeA change in a substance that does not change its identity


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


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