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5 Written questions

5 Matching questions

  1. Alkali Metals
  2. Radioactive tracers
  3. Starch
  4. Acid
  5. Product
  1. a Natural organic compound.
  2. b Tastes sour and turns blue litmus paper pink, pH is less than 7.
  3. c Substance shown on the right side of a chemical equation.
  4. d Soft and extremely reactive like sodium, lithium and potassium.
  5. e Used to detect cancer tumors.

5 Multiple choice questions

  1. Change in color, formation of gas, heat.
  2. Process that produces water and salt.
  3. Amino acids are combined to make a larger molecule.
  4. Body's main energy source, especially in respiration. Sugar is an example.
  5. Force that holds two atoms together.

5 True/False questions

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

          

  2. Alkali metalElement in the far left column of the periodic table.

          

  3. Physical changeForce that holds two atoms together.

          

  4. Nuclear FissionNuclei with smaller masses that combine to form one nucleus with a larger mass.

          

  5. Replacement reactionCompound formed put atoms in different order.

          

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