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5 Written questions

5 Matching questions

  1. Describe two ways that atoms may combine with other atoms.
  2. Identify the 4 levels of protein structure.
  3. Define electrolyte balance.
  4. How does the hydrogen ion concentration compare between a solution of pH 6.4 and a solution of pH 8.42.
  5. What does the pH scale measure?
  1. a The body regularly gains and loses these electrolytes, but they must be present in certain concentrations, both inside and outside cells, to maintain homeostasis.
  2. b tracks the number of decimal places in a hydrogen ion concentration without writing them out.
  3. c Primary, Secondary, Tertiary, Quaternary
  4. d The solution at pH 6.4 has 100 times the hydrogen ion concentration of a solution at pH 8.42.
  5. e Two atoms of hydrogen can combine with one atom of oxygen to produce a molecule of the compound water.
    Atoms of the same element combine, they produce molecules of that element.

5 Multiple choice questions

  1. The number of protons equals the number of electrons.
  2. Water
  3. Ionic: ions with opposite electrical charges attract
    Covalent: a chemical bond between atoms that share electrons.
  4. Atoms that have the same atomic number but different atomic weight.
  5. they are chemicals that resist pH change. They combine with hydrogen ions when these ions are in excess or they donate hydrogen ions when these ions are depleted.

5 True/False questions

  1. What is an Ion?Atoms that have the same atomic number but different atomic weight.

          

  2. What is a molecular formula? A structural formula?Molecular: consists of the symbols of the elements in the molecule with numerical subscripts that indicate how many atoms of each element are present.
    Structural: representation of the way atoms bond in a molecule.

          

  3. What are the functions of DNA and RNA?tracks the number of decimal places in a hydrogen ion concentration without writing them out.

          

  4. Where are electrons, protons, and neutrons located within an atom?the nucleus of an atom.

          

  5. What is the difference between an electrolyte and a nonelectrolyte?Electrolyte: substance that ionizes in a water solution
    Nonelectrolyte: organic compounds that dissolve in water, usually do not release ions.

          

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