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5 Written Questions

5 Matching Questions

  1. Replacement
  2. Endothermic Reaction
  3. Catalyst
  4. Physical Change
  5. Closed System
  1. a A system in which no matter is allowed to enter or leave
  2. b A reaction that absorbs energy in the form of heat
  3. c A change in a substance that does not change its identity
  4. d A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  5. e A material that increases the rate of a reaction by lowering the activation energy

5 Multiple Choice Questions

  1. A change in which on or more substances combine or break apart to form new substance
  2. A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  3. A characteristic of a pure substance that can be observed without changing it into another substance
  4. The study of the properties of matter and how matter changes
  5. The minimum amount of energy needed to get a chemical reaction started

5 True/False Questions

  1. Chemical PropertyA characteristic of a pure substance that describes its ability to change into a different substance


  2. Chemical EquationA short, easy way to show a chemical reaction, using symbols.


  3. PrecipitateA substance that undergoes change in a chemical reaction


  4. MatterAnything that has mass and occupies space


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


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