Physical Changes In Liquids

17 Questions | Total Attempts: 44

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Physical Changes In Liquids

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Questions and Answers
  • 1. 
    Look-alike Liquids Check all the clear liquids.
    • A. 

      Mineral oil

    • B. 

      Vinegar

    • C. 

      Cola

    • D. 

      Alcohol

  • 2. 
    Physical Properties and Physical Change Check three physical properties of liquids.
    • A. 

      Color

    • B. 

      Chemical reactivity

    • C. 

      Density

    • D. 

      Surface tension

  • 3. 
    Physical Properties and Physical Changes Can physical properties of a liquid change when it dissolves?
    • A. 

      Yes

    • B. 

      No

  • 4. 
    How liquids act on different surfaces Mark the statement that is TRUE.
    • A. 

      On plastic, water and alcohol spread out.

    • B. 

      On plastic, water and alcohol bead up.

    • C. 

      On plastic, water beads up, alcohol spreads out.

  • 5. 
    Inside Water
  • Because of the way oxygen and hydrogen atoms are bonded together, the area near the oxygen has a slight negative charge and the areas near the hydrogens have a slight __________________  _____________________.
  • 6. 
    More about water What causes water molecules to be attracted to other water molecules? 
  • 7. 
    More about water
  • Notice that the _____________ from one water molecule is attracted to the ____________  from another and vice versa.
  •    
  • 8. 
    Surface Tension What is one reason water and alcohol look differently on a surface?
    • A. 

      Molecular incohesion

    • B. 

      Surface tension

    • C. 

      Exponential growth

    • D. 

      Stress

  • 9. 
    Surface Tension Why are water molecules on the surface attracted downward?
    • A. 

      Becaue they are uncomfortable with the air.

    • B. 

      Because they have no water molecules above them.

    • C. 

      Because they can only be attracted in one direction.

  • 10. 
    Surface Tension
  • These surface molecules form attractions that are more stable and cause water to form a type of “______________”. This phenomenon is called surface tension.
  • 11. 
    Now, let's look at alcohol Check the similarities between an alcohol bond and a water bond. Pick two.
    • A. 

      Both have a strong surface tension

    • B. 

      Both have a carbon hydrogen bond

    • C. 

      Oxygen has a slight negative charge

    • D. 

      Both have hydrogen and oxygen

  • 12. 
    Paper and Waxed Paper Cellulose or wood is made of molecules held together by a _________________________ bond.
  • 13. 
    Paper and Waxed Paper  The wax in wax paper has carbon atoms bonded to _______________________ atoms.
    • A. 

      Hydrogen

    • B. 

      Helium

    • C. 

      Hexagonal

    • D. 

      Hydroxide

  • 14. 
    Alcohol and Water on Paper and Wax Paper Alcohol an water absorb into paper.
    • A. 

      True

    • B. 

      False

  • 15. 
    Alcohol and Water on Paper and Wax Paper  Why does water bubble on the waxed paper and alcohol is absorbed on the wax paper?
    • A. 

      Water is not as wet as alcohol

    • B. 

      The smell of alcohol makes it spread

    • C. 

      The surface tension of water is stronger than alcohol's

  • 16. 
    Liquids mixing with water One way to determine what a substance is, is to mix it with water and to see h ow it mixes.
    • A. 

      True

    • B. 

      False

  • 17. 
    Liquids Mixing with Water The way the liquids mix is based on the ____________________ between water molecules and the molecules that make up each liquid.
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