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5 Written questions

5 Matching questions

  1. anions
  2. are similar
  3. system
  4. molecule
  5. red
  1. a the electronegativities of f-block elements ________
  2. b a neutral group of atoms held together by covalent bonds
  3. c what color light has the longest wavelength?
  4. d a specific portion of matter in a given region of space that has been selected for study during an experiment or observation.
  5. e negatively charged ions

5 Multiple choice questions

  1. a general term for a specific isotope of an element
  2. In general, a calculated answer cannot be more precise than the ________ measurement form which it was calculated.
  3. something that has magnitude, size, or amount
  4. states that if two or more different compounds are comosed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers
  5. the mass of one mole of a pure substance is called the __________ of that substance

5 True/False questions

  1. intermolecular forcesforces of attraction between molecules

          

  2. isotopesa particle of electromagnetic radiation having zero mass and carrying a quantum of energy

          

  3. theorya broad generalization that explains a body of facts or phenomena.

          

  4. valencea neutral group of atoms held together by covalent bonds

          

  5. dimensional analysisthe mass of one mole of a pure substance is called the __________ of that substance