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5 Written questions

5 Matching questions

  1. Acid Precipitation
  2. Isotopes
  3. Proton
  4. Buffers
  5. Hydrogen Bonds
  1. a A type of weak chemical bond formed when the partially positive hydrogen atom participating in a polar covalent bond in one molecule is attracted to the partially negative atom participating in a polar covalent bond in another molecule (or in another region of the same molecule).
  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 A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.
  4. d Rain, snow or fog that is more acidic than pH 5.2.
  5. e One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.

5 Multiple choice questions

  1. The amount of energy associated with the movement of atoms and molecules in a body of matter.
  2. A strong chemical bond in which two atoms share one or more pairs of outer-shell electrons.
  3. A solution in which water is the solvent.
  4. A starting material in a chemical reaction.
  5. Measures the intensity of heat.

5 True/False questions

  1. Chemical BondsAn attraction between two atoms resulting from a sharing of outer-shell electrons or the presence of opposite charges on the atoms. The bonded atoms gain complete outer electron shells.

          

  2. SolventThe dissolving agent of a solution. Water is the most versatile solvent known.

          

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

          

  4. Surface TensionThe attraction between different kinds of molecules.

          

  5. Third shell of an atom can contain how many electrons?2

          

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