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5 Written questions

5 Matching questions

  1. Chain reaction
  2. Diamonds
  3. Carbohydrate
  4. Replacement reaction
  5. Protein
  1. a Process in which the products keep the process going.
  2. b Body's main energy source, especially in respiration. Sugar is an example.
  3. c Compound formed put atoms in different order.
  4. d Amino acids are combined to make a larger molecule.
  5. e Substance made from carbon.

5 Multiple choice questions

  1. Element in the far right column of the periodic table.
  2. Substance that's present before a chemical reaction starts.
  3. Light and soft metals like calcium and magnesium.
  4. pH value is greater than 7, tastes bitter, turns litmus paper blue, and may be slippery.
  5. Nuclei with smaller masses that combine to form one nucleus with a larger mass.

5 True/False questions

  1. Chemical ReactionProcess in which a substance is transformed into a new substance.


  2. Physical changeForce that holds two atoms together.


  3. Radioactive tracersAlpha particles, beta particles, and gamma rays.


  4. StarchNatural organic compound.


  5. ExothermicProcess that releases energy and there is an increase in temperature.


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