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5 Written questions

5 Matching questions

  1. Protein
  2. Nuclear Fusion
  3. Isotope
  4. Chemical Reaction
  5. Transition Metals
  1. a Nuclei with smaller masses that combine to form one nucleus with a larger mass.
  2. b Amino acids are combined to make a larger molecule.
  3. c Hard and shiny metals like copper, iron, gold, nickel and zinc.
  4. d Protons are a different number than the neutrons.
  5. e Process in which a substance is transformed into a new substance.

5 Multiple choice questions

  1. Body's main energy source, especially in respiration. Sugar is an example.
  2. Silicon, boron and arsenic. Have properties similar to metals and nonmetals.
  3. A substance that changes color as pH of solution changes.
  4. Force that holds two atoms together.
  5. Process that produces water and salt.

5 True/False questions

  1. StarchNatural organic compound.


  2. BaseTastes sour and turns blue litmus paper pink, pH is less than 7.


  3. Decomposition reactionSimpler substances are formed.


  4. ReactantNatural substances or formed from two natural substances.


  5. Nuclear FissionSplitting nucleus into smaller pieces.