NAME: ________________________

← ch 3 sect 2-3 Test

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of 26 available terms

5 Written Questions

5 Matching Questions

  1. condensation
  2. liquids
  3. melting point
  4. homogenous mixture (solution)
  5. compound
  1. a Have definite volume, but no definite shape. They take the shape of the container.
  2. b a mixture in which the component particles are not easily recognizable (ex. seawater, coffee)
  3. c the temperature at which a solid becomes a liquid
  4. d the change of a gas to a liquid
  5. e a substance composed of two or more atoms of two or more different elements that are chemically combined.

5 Multiple Choice Questions

  1. atom that has lost an electron
  2. when atoms are bonded by sharing their valence electrons
  3. an atom that gains or loses an electron and becomes a charged particle
  4. chemical bonds in which two ions of opposite charge are attracted to one another.
  5. the temperature at which a liquid becomes a gas

5 True/False Questions

  1. heterogenous mixture → a combination of two or more components (ingredients) that retain their own identities

          

  2. molecule → composd of two or more atoms held together by covalent bonds. (have no overall charge bc the total # of electrons = the total # protons)

          

  3. polar bond → chemical bonds in which two ions of opposite charge are attracted to one another.

          

  4. solid → a solution that makes hydrogen (H+) ions in water. has a pH of less than 7

          

  5. mixture → composd of two or more atoms held together by covalent bonds. (have no overall charge bc the total # of electrons = the total # protons)