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Concentration of solutions

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  • What describes the relationship between an atom and an element?
    An element is composed of atoms of the same type
  • What is an atom?
    The smallest particle of matter that retains the properties of an element.
  • What determines the identity of an element?
    The number of protons
  • If 35 grams of sugar is dissolved in 150 mL of water, what is the percent concentration (m/v) of the solution?
    23.3%
  • What particles make up an atom?
    Protons, neutrons, and electrons.
  • A solution has 15 grams of potassium chloride dissolved in 250 mL of water. What is its concentration in g/mL?
    0.06 g/mL
  • In a solution, which component is present in the larger amount?
    Solvent
  • What is the difference between an element and a compound?
    An element has only one type of atom; a compound has two or more elements chemically combined.
  • What is the concentration of a solution if 25 grams of salt is dissolved in 500 mL of water?
    0.05 g/mL
  • What information does the atomic number give you?
    The number of protons in an atom.
  • Which is a method used to separate mixtures based on the different boiling points of components?
    Distillation
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