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5 Written questions

5 Matching questions

  1. Water Cycle
  2. Catalyst
  3. Metal
  4. Evolution
  5. Friction
  1. a the resistance encountered when one body is moved in contact with another
  2. b any process of formation or growth; development
  3. c (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  4. d any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
  5. e
    the continuous process by which water moves from Earth's surface to the atmosphere and back

5 Multiple choice questions

  1. formed by reaction between an acid and an alcohol with elimination of water

  2. single sugar molecule
  3. the occurrence of two or more things coming together

  4. ultramicroscopic infectious agent that replicates itself only within cells of living hosts

  5. balance of opposing forces; balance of the mind; equanimity

5 True/False questions

  1. Exoskeletonany process of formation or growth; development

          

  2. Reptile
    any cold-blooded vertebrate of the class Reptilia including tortoises turtles snakes lizards alligators crocodiles and extinct forms

          

  3. Neurona stable particle with positive charge equal to the negative charge of an electron

          

  4. Deoxyribonucleic Acid
    normal structural configuration of DNA with two helices winding around the same axis

          

  5. Base
    the molecular weight of a substance expressed in grams