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5 Written questions

5 Matching questions

  1. Hydrogen Bond
  2. Carbohydrates
  3. Amino Acids
  4. Atomic Number
  5. Atom
  1. a Contain carbon, hydrogen and oxygen.
  2. b number given to an element equal to the number of protons its atoms contain.
  3. c small molecules that are the building blocks of proteins.
  4. d Extremely weak bonds formed when a hydrogen atom binds to one electron hungry nitrogen or oxygen atom is attracted to another electron hungry atom and a bridge if formed between them.
  5. e The building blocks of elements.

5 Multiple choice questions

  1. Uncharged, or neutral atomic particles.
  2. the dissolved substance in a solution.
  3. functional proteins that act as biological catalysts. A catalyst is a substance that increases the rate of a chemical reaction without becoming part of the product or being changed itself.
  4. nucleic acid found in all living cells:carries the organism's hereditary information.
  5. the main building material of all cells.

5 True/False questions

  1. IsotopesAtomic particles with a positive charge.

          

  2. solventthe dissolved substance in a solution.

          

  3. MoleculesWhen two or more atoms combine chemically.

          

  4. ElementsNegatively charged atomic particles.

          

  5. valence shellAn atoms outermost electron shell.

          

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