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5 Written questions

5 Matching questions

  1. Temperature
  2. Molecule
  3. Trace elements
  4. Second shell of an atom can contain how many electrons?
  5. Aqueous Solution
  1. a 8
  2. b Two or more atoms held together by covalent bonds.
  3. c A solution in which water is the solvent.
  4. d Measures the intensity of heat.
  5. e an element that is essential for life but required in extremely minute amounts.

5 Multiple choice questions

  1. The smallest unit of matter that retains the properties of an element.
  2. A substance that is dissolved in a solution.
  3. A compound resulting from the formation of ionic bonds; also called an ionic compound.
  4. Anything that occupies space and has mass.
  5. 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.

5 True/False questions

  1. Electron ShellsThe attraction of a given atom for the electrons of a covalent bond.

          

  2. Mass NumberThe sum of the number of protons and neutrons in an atom's nucleus.

          

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

          

  4. Radioactive IsotopeAn isotope whose nucleus decays spontaneously, giving off particles and energy.

          

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