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5 Written questions

5 Matching questions

  1. Nucleic Acids
  2. Lipids
  3. Hydrogen Bond
  4. Enzyme(catalyst)
  5. Dehydration synthesis
  1. a 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.
  2. b 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.
  3. c A water molecule is lost and forms a bond.
  4. d Determine what type of or
  5. e A large group of organic compounds - contain carbon, hydrogen and oxygen with more carbon and hydrogens than oxygens.

5 Multiple choice questions

  1. When two or more different atoms bind together to form a molecule.
  2. a substance that takes part in and undergoes a chemical change during a reaction.
  3. Occurs when a molecule is broken down into smaller molecules, atoms or ions. AB->A+B
  4. the main building material of all cells.
  5. Hydroxides ionize and dissociate in water releasing hydroxyl ions (OH-)

5 True/False questions

  1. radioactivitya substance that takes part in and undergoes a chemical change during a reaction.


  2. synthesis reactionOccur when two or more atoms or molecules combine to form a larger, more complex molecule. A+B->AB


  3. AcidsA substance that can release hydrogen ions (H+) in detectable amounts. having a sour taste and can dissolve many metals of burn a hole in your rug. pH below 7


  4. Atomic MassThe sum of the masses of all the protons and neutrons contained in an atoms nucleus.


  5. solventthe dissolved substance in a solution.


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