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5 Written questions

5 Matching questions

  1. Electron
  2. Proton
  3. Compound
  4. Isotopes
  5. Solute
  1. a A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.
  2. b One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.
  3. c A substance that is dissolved in a solution.
  4. d a substance consisting of two or more different elements combined in a fixed ratio.
  5. e A subatomic particle with a single negative electrical charge. One or more electrons move around the nuclues of an atom.

5 Multiple choice questions

  1. A covalent bond in which electrons are shared equally between two atoms of similar electronegativity.
  2. A molecule containing polar covalent bonds and having an unequal distribution of charges.
  3. Decreasing pH of ocean waters due to absoprtion of excess atmospheric CO2 from the burning of fossil fuels.
  4. Two or more atoms held together by covalent bonds.
  5. A compound resulting from the formation of ionic bonds; also called an ionic compound.

5 True/False questions

  1. Temperaturea substance consisting of two or more different elements combined in a fixed ratio.

          

  2. SolutionA liquid that is a homogeneous mixture of two or more substances.

          

  3. MatterA substance that decreases the hydrogen ion concentration in a solution. 14 is a strong base on the pH scale.

          

  4. Ionic BondA subatomic particle having no electrical charge, found in the nucleus of an atom.

          

  5. NeutronA subatomic particle having no electrical charge, found in the nucleus of an atom.

          

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