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5 Written questions

5 Matching questions

  1. Matter
  2. Coeffecient
  3. Synthesis
  4. Conservation of Mass
  5. Open System
  1. a Matter can enter or escape to the surroundings
  2. b A Chemical Reaction in which two or more simple substances combine to form a new, more complex substance
  3. c During a Chemical Reaction Matter is not created or destroyed
  4. d The number placed in front of a chemical formula in an equation
  5. e Anything that has mass and takes up space

5 Multiple choice questions

  1. A material that increases the rate of a reaction by lowering the activation energy
  2. A characteristic of a substance into another substance
  3. A Characteristic of a substance that describes its ability to change into another substance
  4. Matter is not allowed to enter or leave
  5. A solid that forms from solution during a chemical reaction

5 True/False questions

  1. ChemistryThe study of matter and how matter changes

          

  2. Exothermic ReactionA reaction in which energy is absorbed

          

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

          

  4. ReactantsA material that increases the rate of a reaction by lowering the activation energy

          

  5. The Basic ingredient in a FireworkStar Pellet

          

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