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5 Written questions

5 Matching questions

  1. Substance present in smaller amounts
  2. Disaccharides
  3. Atoms
  4. Inert
  5. Isotopes
  1. a When the outermost energy level of an atom is filled to capacity or contains eight electrons, the atom is stable. Such atoms are chemically unreactive. (complete)
  2. b Each element is composed of more or less identical (particles or building blocks)
  3. c Nearly all known elements have two or more structural variations, which differ in the number of neutrons they contain.
  4. d solutes
  5. e Carbohydrates that are made up of two monosaccharides

5 Multiple choice questions

  1. Atoms in which the outermost energy level contains fewer than eight electrons tend to gain,lose, or share electrons with other atoms to achieve stability. (incomplete)
  2. a negatively charged ion
  3. Bases
  4. cation
  5. are basically flat molecules made of four interlocking hydrocarbon rings. (fat soluble and contain little oxygen)

5 True/False questions

  1. Atomic weightis and average of relative weights (mass numbers) of all the isotopes of an element

          

  2. RadioisotopesNearly all known elements have two or more structural variations, which differ in the number of neutrons they contain.

          

  3. The electron acceptor acquires a net negative charge called...cation

          

  4. A combination of two or more atoms held together by chemical bond is calledmolecule of a compound.

          

  5. the key to chemical reactivity is ...Octet rule (or rule of eight)

          

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