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5 Written questions

5 Matching questions

  1. ribonucleic acid(RNA)
  2. Ionic bonds
  3. pH
  4. Electron Shells
  5. Hydrogen Bond
  1. a the nucleic acids that contains ribose acts in protein synthesis. Present in all living cells. Principal role is to aid as a messenger carrying instructions from DNA for controlling the synthesis of proteins.
  2. b Bond formed when electrons are completely transferred from one atom to another.
  3. c Orbits or fixed regions of space around the nucleus that electrons occupy.
  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 Measures the relative concentration of hydrogen and hydroxyl ions in various solutions.

5 Multiple choice questions

  1. small molecules that are the building blocks of proteins.
  2. Substances that conduct an electrical current in solutions.
  3. Unique substances that cannot be broken down into simpler substances by ordinary chemical methods.
  4. A large group of organic compounds - contain carbon, hydrogen and oxygen with more carbon and hydrogens than oxygens.
  5. A water molecule is lost and forms a bond.

5 True/False questions

  1. Decomposition ReactionOccurs when a molecule is broken down into smaller molecules, atoms or ions. AB->A+B


  2. solventthe dissolved substance in a solution.


  3. IonsCharged particles


  4. EnergyThe ability to do work or to put matter into motion.


  5. HydrolysisSubstances that conduct an electrical current in solutions.


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