Bleaching (Simple tenses of verbs)

Jennifer

Grammar — Beginner Level
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Activity

Complete each sentence choosing the correct option

  1. In the 17th century, a cloth bleaching industry in Western Europe   alternating alkaline baths and acid baths.
  2. A Swedish chemist, Carl Wilhelm Scheele,   chlorine in 1774.
  3. Bleach often   specifically to a dilute solution of sodium hypochlorite.
  4. Bleaches   by reacting with many colored organic compounds.
  5. Bleaches   more useful in the years to come.
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Discussion

Practice your writing skills by discussing the questions below

  1. What are bleaches for?
  2. How often do use bleach ? Why?
    Jennifer

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    Grammar

    Vocabulary

      • typically, a corrosive or sour-tasting liquid of this kind
      • having the properties of an alkali, or containing alkali; having a pH greater than 7
      • do or perform in turn repeatedly
      • an act or process of immersing and washing one's body in a large container of water
      • the chemical element of atomic number 17, a toxic, irritant, pale green gas
      • substance formed from two or more elements; mixture
      • (diluted )make (a liquid) thinner or weaker by adding water or another solvent to it
      • economic activity concerned with the processing of raw materials and manufacture of goods in factories
      • natural, biological
      • a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent)

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