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5 Written questions

5 Matching questions

  1. Radioactive Isotope
  2. Aqueous Solution
  3. Proton
  4. Atom
  5. Salt
  1. a The smallest unit of matter that retains the properties of an element.
  2. b A compound resulting from the formation of ionic bonds; also called an ionic compound.
  3. c A solution in which water is the solvent.
  4. d An isotope whose nucleus decays spontaneously, giving off particles and energy.
  5. e A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.

5 Multiple choice questions

  1. An 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. An atom's central core, containing protons and neutrons.
  3. Rain, snow or fog that is more acidic than pH 5.2.
  4. An atom or group of atoms that has gained or lost one or more electrongs, thus acquiring a charge.
  5. The making and breaking of chemical bonds, leading to changes in the composition of matter.

5 True/False questions

  1. Fourth shell of an atom can contain how many electrons?18

          

  2. pH ScaleA compound resulting from the formation of ionic bonds; also called an ionic compound.

          

  3. Evaporative Coolingoccurs because the molecules with the greates energy leave.

          

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

          

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

          

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