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5 Written questions

5 Matching questions

  1. kinetic energy
  2. heterogeneous
  3. heat of fusion
  4. law of conservation of mass
  5. phase
  1. a Mass is neither destroyed nor created during ordinary chemical reactions or physical changes
  2. b the energy an object has due to its motion
  3. c the amount of energy required to change 1 g of a solid to a liquid
  4. d not uniform throughout
  5. e any part of a system with uniform composition and properties; a state

5 Multiple choice questions

  1. characteristic that cannot be observed without altering the substance
  2. a substance formed by the chemical combination of two or more elements in definite proportions
  3. one in which the form or appearance of matter changes, but not its composition
  4. the amount of heat energy required to convert one gram of a substance from a liquid to a gas
  5. A measure of force with which gravity pulls a body toward the center of the earth;

5 True/False questions

  1. energycapacity to do work or cause change

          

  2. heatA measure of force with which gravity pulls a body toward the center of the earth;

          

  3. elementa pure substance made of only one kind of atom

          

  4. exothermic reactiona reaction that releases energy in the form of heat

          

  5. temperatureA combination of two or more substances that are not chemically combined