Level 2 Quiz

  1. The density of an object is determined from:
    1. volume only
    2. mass only
    3. bounce height only
    4. volume and bounce height
    5. volume and mass


  2. The process of making glue become an elastomer is known as:
    1. rubberizing
    2. magic
    3. crosslinking
    4. condensation
    5. solidification


  3. Which of the following are necessary for the polymer ball activities?
    1. eye protection
    2. good ventilation
    3. washing hands afterwards
    4. following instructions
    5. all of the above


  4. Bounce height is used to compare:
    1. density
    2. elasticity
    3. volume
    4. mass
    5. all of the above


  5. The experimental balls should be stored in a sealed container to prevent them from:
    1. being stolen
    2. getting dirty
    3. rolling away
    4. drying out
    5. becoming soft


  6. Latex was discovered:
    1. in the 1800's in Brazil
    2. in ancient Egypt
    3. in a polymer lab by Dr. Lon Mathias
    4. in Germany during World War II
    5. in 1950 by a toy manufacturer


  7. Latex is the starting material for:
    1. glue
    2. rubber
    3. pizza
    4. all polymers
    5. ethanol


  8. Household vinegar is a weak solution of:
    1. ammonia
    2. ethanol
    3. acetic acid
    4. latex
    5. sodium silicate


  9. Sodium silicate solution is also known as:
    1. sea water
    2. ethanol
    3. vinegar
    4. water glass
    5. sand


  10. When stretched and released, an elastomer will:
    1. return to its original shape
    2. become permanently distorted
    3. break or crumble
    4. become hard and brittle
    5. become soft and pliable


  11. Household vinegar should have a pH:
    1. well above 7
    2. slightly above 7
    3. at exactly 7
    4. below 7
    5. that cannot be determined


  12. The polymer found in white glue is:
    1. poly (vinyl alcohol)
    2. polystyrene
    3. polyethylene
    4. polypropylene
    5. polyurethane