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5 Written questions

5 Matching questions

  1. Ions
  2. Decomposition Reaction
  3. Elements
  4. Buffer
  5. Nucleic Acids
  1. a Occurs when a molecule is broken down into smaller molecules, atoms or ions. AB->A+B
  2. b Unique substances that cannot be broken down into simpler substances by ordinary chemical methods.
  3. c Regulates the acid base balance in the body.
  4. d Determine what type of or
  5. e Charged particles

5 Multiple choice questions

  1. Heavier isotopes of certain atoms are unstable and tend to decompose to become more stable.
  2. Bond formed from molecules where atoms share electrons.
  3. The sum of the masses of all the protons and neutrons contained in an atoms nucleus.
  4. a homogenous mixture of two or more components.
  5. Atomic particles with a positive charge.

5 True/False questions

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

          

  2. Deoxyribonucleic acidthe 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.

          

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

          

  4. AtomCharged particles

          

  5. Electron ShellsOrbits or fixed regions of space around the nucleus that electrons occupy.