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5 Written Questions

5 Matching Questions

  1. Buffers
  2. Acid Precipitation
  3. Proton
  4. Isotopes
  5. Nucleus
  1. a One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.
  2. b A chemical substance that resists changes in pH by accepting hydrogen ions from or donating hydrogen ions to solutions.

    substance that minimize changes in pH.
  3. c Rain, snow or fog that is more acidic than pH 5.2.
  4. d An atom's central core, containing protons and neutrons.
  5. e A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.

5 Multiple Choice Questions

  1. 2
  2. A starting material in a chemical reaction.
  3. The sticking together of molecules of the same kind, often by hydrogen bonds.
  4. A covalent bond in which electrons are shared equally between two atoms of similar electronegativity.
  5. The making and breaking of chemical bonds, leading to changes in the composition of matter.

5 True/False Questions

  1. SolutionA substance that is dissolved in a solution.

          

  2. Polar MoleculeA molecule containing polar covalent bonds and having an unequal distribution of charges.

          

  3. Ocean AcidificationRain, snow or fog that is more acidic than pH 5.2.

          

  4. IonAn atom or group of atoms that has gained or lost one or more electrongs, thus acquiring a charge.

          

  5. AdhesionThe sticking together of molecules of the same kind, often by hydrogen bonds.

          

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