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5 Written questions

5 Matching questions

  1. Chemistry
  2. Chemical Equation
  3. Replacement
  4. Concentration
  5. Inhibitor
  1. a A material that decreases the rate of a reaction
  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 amount of one material in a certain volume of another material
  4. d The study of the properties of matter and how matter changes
  5. e A short, easy way to show a chemical reaction, using symbols.

5 Multiple choice questions

  1. A reaction that absorbs energy in the form of heat
  2. A characteristic of a pure substance that can be observed without changing it into another substance
  3. A substance formed as a result of a chemical reaction.
  4. A rapid reaction between oxygen and fuel that results in a fire
  5. A material that increases the rate of a reaction by lowering the activation energy

5 True/False questions

  1. Closed SystemA system in which no matter is allowed to enter or leave

          

  2. EnzymeAnything that has mass and occupies space

          

  3. FuelAnything that has mass and occupies space

          

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

          

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