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5 Written questions

5 Matching questions

  1. pH
  2. mass number
  3. solid
  4. chemical equation
  5. temperature
  1. a A measure of molecular energy of motion
  2. b The weight of an atomic nucleus expressed in atomic mass units (the sum of the protons and neutrons)
  3. c A ways of describing what happens in a chemical reaction
  4. d A scale used to indicate the concentration of an acid or a base
  5. e The phase of matter in which the molecules are packed tightly together; they vibrate in place

5 Multiple choice questions

  1. When the ions of one compound (acid) interact with the ions of another compound (base), forming a salt and water
  2. compounds that release hydroxide ions or accept hydrogen ions in a solution
  3. The amount of heat energy necessary to raise the temperature of 1 gram of water 1`c
  4. An electron-transport reaction in which the molecules losing electrons become oxidized and those gaining electrons become reduced
  5. A region surrounding an atomic nucleus that contains electrons moving at approximately the same speed and having approximately the same amount of kinetic energy

5 True/False questions

  1. productsThe particle in the nucleus of an atom that has a positive electrical charge

          

  2. ionElectrically unbalanced or charged atoms

          

  3. neutronA particle in the nucleus of an atom that has no electrical charge; named to reflect this lack of electrical charge

          

  4. electronA particle in the nucleus of an atom that has no electrical charge; named to reflect this lack of electrical charge

          

  5. Kinetic energyThe energy an object has because of its position

          

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