Water Properties and Experiments
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Questions and Answers

What was observed when water was sprayed on the surface of the mirror?

  • The water evaporated immediately.
  • The water spread out evenly across the mirror.
  • The mirror became dirty.
  • Some droplets formed and remained on the surface. (correct)

    • What happened to the sugar when it was stirred into the water?

  • The sugar dissolved completely in the water. (correct)
  • The sugar clumped together at the bottom.
  • The sugar changed color after dissolving.
  • The sugar became visible and floated at the surface.

    • What was the result when a paper clip was placed on top of the water?

  • The paper clip floated without sinking. (correct)
  • The paper clip dissolved in the water.
  • The paper clip sank immediately.
  • The paper clip caused the water to spill out of the glass.

    • Which property of water was likely observed from the tissue paper setup?

    <p>Cohesion</p> Signup and view all the answers

    In what way does water become essential to life as indicated by its properties?

    <p>Water facilitates chemical reactions in living organisms.</p> Signup and view all the answers

    What makes water a polar molecule?

    <p>It has a slightly negative charge at the oxygen end.</p> Signup and view all the answers

    Which property of water allows it to rise in capillary tubes against gravity?

    <p>Adhesion</p> Signup and view all the answers

    How does water's high heat capacity affect the environment?

    <p>It aids in gradual temperature changes.</p> Signup and view all the answers

    What role does water's cohesion property play in plant life?

    <p>It allows water to be pulled up through plant vessels.</p> Signup and view all the answers

    What occurs when ice cubes are added to water?

    <p>The ice floats due to water's density.</p> Signup and view all the answers

    What effect does mixing food color with water demonstrate?

    <p>The color mixes uniformly due to water's solvent properties.</p> Signup and view all the answers

    What is the primary reason that water is essential for life on Earth?

    <p>It serves as a universal solvent.</p> Signup and view all the answers

    What is the significance of surface tension in water?

    <p>It enables small objects to float on the water surface.</p> Signup and view all the answers

    Study Notes

    Water Properties

    • Water molecule has two hydrogen atoms and one oxygen atom, which are arranged in a V-shape.
    • Water molecules are polar because they have a slightly negative charge near the oxygen atom and a slightly positive charge near the hydrogen atoms.
    • The charge of a water molecule is similar to a magnet.
    • Water has a high heat capacity, meaning it requires a lot of energy to raise its temperature.

    Water Experiments

    • Setup 1
      • Ice cubes float on water due to the density of water.
      • Ice is less dense than water, which is why it floats.
      • The property of water observed is density.
    • Setup 2
      • The colored water moved up the tissue paper.
      • The tissue paper absorbed the water due to capillary action.
      • The property of water observed is capillary action.
    • Setup 3
      • Water droplets stuck to the mirror's surface.
      • Water sticks to surfaces due to adhesion.
      • The property of water observed is adhesion.
    • Setup 4
      • The sugar dissolved into the water.
      • Water’s ability to dissolve substances makes it a good solvent, which allows many substances to dissolve in it.
      • The property of water observed is being a solvent.
    • Setup 5
      • The paper clip floated on water.
      • Water’s surface tension allows it to support lightweight objects.
      • The property of water observed is surface tension.

    Water Essential to Life

    • Water is essential to life due to its unique properties, allowing various life forms to thrive.
    • Capillary action moves water up plant roots, transporting nutrients.
    • Density allows aquatic life to survive in water, as ice floats, providing a layer of insulation.
    • Adhesion enables water to stick to surfaces, such as blood vessels and small intestines, aiding in transport.
    • Surface tension allows insects to walk on water, supporting small organisms.
    • Solvent properties enable transport of nutrients and waste products for all living things.

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    Description

    This quiz covers the fundamental properties of water, including its molecular structure, polarity, density, capillary action, and adhesion. Participants will explore various experiments demonstrating these properties and gain a deeper understanding of water's unique characteristics.

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