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5 Written questions

5 Matching questions

  1. Acid
  2. Second shell of an atom can contain how many electrons?
  3. Surface Tension
  4. Adhesion
  5. Reactants
  1. a A substance that increases the hydrogen ion concentration in a solution. 0 on pH scale is a strong acid.
  2. b 8
  3. c A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules.
  4. d A starting material in a chemical reaction.
  5. e The attraction between different kinds of molecules.

5 Multiple choice questions

  1. A compound resulting from the formation of ionic bonds; also called an ionic compound.
  2. A scale we used to describe how acidic or basic a solution is. The scale ranges from 0-14, 0 being the most acidic and 14 being the most basic. 7 is neutral (pure water)
  3. A liquid that is a homogeneous mixture of two or more substances.
  4. One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.
  5. Measures the intensity of heat.

5 True/False questions

  1. SoluteA liquid that is a homogeneous mixture of two or more substances.

          

  2. Hydrogen 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.

          

  3. Ocean AcidificationDecreasing pH of ocean waters due to absoprtion of excess atmospheric CO2 from the burning of fossil fuels.

          

  4. ElementA subsctance that cannot be broken down to other substance by ordinary chemcial means.

          

  5. Acid PrecipitationThe attraction between different kinds of molecules.