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5 Written questions

5 Matching questions

  1. solvent
  2. Adenosine triphospate (ATP)
  3. solute
  4. Hydrogen Bond
  5. Covalent Bond
  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 Provides a form of chemical energy that all body cells can use. WIthout this, molecules cannot be made or broken down, cells cannot maintain boundaries, and all life processes stop.
  3. c the dissolved substance in a solution.
  4. d the liquid in which a solute is dissolved to form a solution.
  5. e Bond formed from molecules where atoms share electrons.

5 Multiple choice questions

  1. Carbon containing compounds.
  2. Contain carbon, hydrogen and oxygen.
  3. Atomic particles with a positive charge.
  4. nucleic acid found in all living cells:carries the organism's hereditary information.
  5. Occur whenever atoms combine with or dissociate from other atoms.

5 True/False questions

  1. BufferRegulates the acid base balance in the body.


  2. radioactivityHeavier isotopes of certain atoms are unstable and tend to decompose to become more stable.


  3. Compoundthe liquid in which a solute is dissolved to form a solution.


  4. proteinsAtomic particles with a positive charge.


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


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