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5 Written questions

5 Matching questions

  1. Convalent Bond
  2. Carbohydrate
  3. Acid
  4. Surface Tension
  5. Adhesion
  1. a Compound that Increases the concentration of hydrogen ions (h+) in solution
  2. b An attraction between different substances (why things get wet)
  3. c Forms when 2 or more atoms share electrons to form a molecule
  4. d Organic compounds made of carbon, hydrogen, and oxygen atoms.
  5. e Caused by the attraction between water molecules; prevents the surface of water from easily breaking.

5 Multiple choice questions

  1. The energy needed to start a chemical reaction
  2. Nonpolar molecules that are not solube in water ( can dissolve )
  3. A group of atoms held together by convalent bonds
  4. The substance on which an enzyme acts during a chemical reaction.
  5. The number of protons plus the number of neutrons.

5 True/False questions

  1. EnzymeSubstances that increase the speed of chemical reactions ( usually a protein, Lowers activation energy )


  2. CohesionThe attraction between substances of the same kind.


  3. ProteinThe attraction between substances of the same kind.


  4. Nucleic AcidA long chain of smaller molecules called nucleotides


  5. Atomic NumberThe number of protons in the nucleus of an element.