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5 Written questions

5 Matching questions

  1. Acid
  2. Activation Energy
  3. Solute
  4. Protein
  5. Convalent Bond
  1. a Forms when 2 or more atoms share electrons to form a molecule
  2. b Substance that is dissolved
  3. c Compound that Increases the concentration of hydrogen ions (h+) in solution
  4. d The energy needed to start a chemical reaction
  5. e Large complex compounds that contain carbon, hydrogen, oxygen, and nitrogen

5 Multiple choice questions

  1. Nonpolar molecules that are not solube in water ( can dissolve )
  2. Site on an enzyme that attaches to a substrate
  3. Substances that increase the speed of chemical reactions ( usually a protein, Lowers activation energy )
  4. A mixture in which one or more substances is evenly distributed in another substance
  5. The number of protons plus the number of neutrons.

5 True/False questions

  1. ElementWhat dissolves the solute - usually water


  2. Surface TensionCaused by the attraction between water molecules; prevents the surface of water from easily breaking.


  3. IonThe smallest unit of matter that can not be broken down by chemical means.


  4. MoleculeA group of atoms held together by convalent bonds


  5. Ionic BondA substance made of the joined atoms of two or more different elements.