psb3 014 ☈ Name:

  1. The graph shows data gathered by a student in SC 130 physical science for the density of soap.
    Soap density background rectangle major grid lines axes x-axis and y-axis linear regression line data points as circles text layers Soap density volume (cm3) mass (g) y-axis labels 0 8 16 24 32 40 48 56 64 72 80 x-axis labels 0 10 20 30 40 50 60 70 80 90 100
    __________ What is the slope of the line without any units?
  2. ______________ What is the density ρ of the soap (include units!)?
  3. ______________ Will the soap float or sink?
  4. __________ A student measures a bar of soap with a length of 5 cm, a width of 3 cm, and a height of 2 cm. What is the volume of the soap?
  5. __________ A student measures a bar of soap with a length of 5 cm, a width of 3 cm, and a height of 2 cm. The soap has a mass of 36 grams. What is the density of the soap?
  6. ____________________ A student measures the length of a piece of soap using a ruler. Is the measurement a primary or calculated measurement?
  7. Why do you think the bar of soap knew what to do in the laboratory on Thursday when placed into the water?
  8. _____________ A bar of soap is found to have a density of 1.6 g/cm³. If the volume of the soap is 100 cm³, what is the mass of the soap?
  9. Plot the data provided on the graph below and draw a line through the points.
    Graphical analysis

    Data

    x (s)y (cm)
    0.00.00
    0.50.75
    1.01.50
    1.52.25
    2.03.00
    2.53.75
    background rectangle major grid lines axes text layers x y y-axis labels 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 y 0 1.0 2.0 3.0 4.0 5.0
  10. ________________ Calculate the slope of the line.
  11. ________________ Write the units of the slope.
  12. ________________ What is the value of your body mass index?
  13. ________________ What weekday were you born on?

  14. As seen in the image, three identical vials have equal amounts of a green liquid. Based on what you learned from the soap, how would you explain that two are floating while one has sunk to the bottom?

slope m= (y2−y1) (x2−x1) • mass m = (density ρ)×(Volume V) • V = lwh