Hon Chemistry 9-3-19 ID of Unknown Lab

HONORS CHEMISTRY – Happy use your brain day!! Can you now use what you’ve learned about density? Who is going to be your spokesperson? When is your lab going to be due? Do you need two due dates???

Can’t wait to “watch” you work!

Print Friendly, PDF & Email

84 thoughts on “Hon Chemistry 9-3-19 ID of Unknown Lab

  1. Gray Block

    Volume:
    V = l x w x h
    V = 10.17 cm x 5.34 cm x 1.20 cm
    V = 65.169 36 cm3 (3 sig figs)
    V = 65.2 cm3

    Mass:
    m = 95.137 g (5 sig figs)

    Density:
    D = m / V
    D = 95.137 g / 65.2 cm3
    D = 1.459 156 442 g/cm3 (must have 3 sig figs)
    D = 1.46 g/cm3

  2. Milky White Block:

    m= 61.531 g

    V= lxwxh
    V= 10.8 cm x 5.212 cm x 1.2 cm
    V= 67.54 cm3

    D= m/V
    D= 61.531 g / 67.54 cm3
    D= 0.9110 g/cm3

  3. Black Block:

    V= (l)(w)(h)
    V= 12.71 cm x 4.12 cm x 1.26 cm
    V= 66.0 cm3

    M= 65.867 g

    D= m/V
    D= 65.867 g / 65.98 cm3
    D= 0.998 g/cm3

  4. CORRECTION:

    Black Block:

    V= (l)(w)(h)
    V= 12.71 cm x 4.12 cm x 1.26 cm
    V= 66.0 cm3

    M= 65.867 g

    D= m/V
    D= 65.867 g / 65.98 cm3
    D= 0.998 g/cm3

  5. Correction:
    Paper White block:
    V=l x h x w
    l = 4.19 cm
    h = 8.81 cm
    w = 1.81 cm
    V= 4.19 cm x 8.81 cm x 1.81 cm
    V= 66.8 cm3

    mass = 38.420 g

    Density= m/V
    Density= 38.420 g / 66.8 cm3
    Density of the paper white block = 0.575 g/cm3

  6. Black block:

    Volume:
    V= l x w x h
    V= 9.50 cm x 4.52 cm x 2.49 cm
    V= 107 cm3

    Mass:
    110.372 g

    Density:
    D= m/V
    D=110.372 g/ 107 cm3
    D=1.03 g/cm3

    Because my density is 1.03 g/cm3, it is most like the Beta block which has a density of 0.967 g/cm3

  7. Black Block:

    V= (l)(w)(h)
    V= 12.71 cm x 4.12 cm x 1.26 cm
    V= 66.0 cm3

    M= 65.867 g

    D= m/V
    D= 65.867 g / 65.98 cm3
    D= 0.998 g/cm3

    My prediction: since I got a density of 0.998 g/cm3, I predict that the block I have is the Beta block which has a density of 0.967 g/cm3.

  8. CORRECTION

    Milky White Block:

    Mass:
    m= 61.531 g

    Volume:
    V= lxwxh
    V= 10.8 cm x 5.212 cm x 1.2 cm
    V= 67.54 cm3

    Density:
    D= m/V
    D= 61.531 g / 67.54 cm3
    D= 0.9110 g/cm3

    Milky White Block is Delta

  9. CORRECTION:
    I have a paper white block.

    V=lwh
    l=14.23 cm
    w= 3.39 cm
    h= 1.31 cm
    V= 14.23 cm x 3.39 cm x 1.31 cm
    V= 63.2 cm3

    mass: 31.715 g

    D= m/V
    D= 31.715 g/ 63.2 cm3
    D= 0.502 g/cm3

    THEREFORE:
    I think the paper white block is “Alpha” because the density of my block is the closest to the density of Alpha which is 0.541 g/cm3.

  10. CORRECTION:
    Gray Block:

    Volume:
    V= l x w x h
    V= 7.32 cm x 3.31 cm x 2.50 cm
    V= 60.57 cm3

    Mass: 85. 673 g

    Density:
    D= m / V
    D= 85.673 g / 60.57 cm3
    D= 1.41 g/cm3

    Since the density of my gray block is 1.41 g/cm3, I believe that my block is the Epsilon block because it has a density of 1.42 g/cm3.

  11. Gray Block

    Volume:
    V = l x w x h
    V = 10.17 cm x 5.34 cm x 1.20 cm
    V = 65.169 36 cm3 (3 sig figs)
    V = 65.2 cm3

    Mass:
    m = 95.137 g (5 sig figs)

    Density:
    D = m / V
    D = 95.137 g / 65.2 cm3
    D = 1.459 156 442 g/cm3 (must have 3 sig figs)
    D = 1.46 g/cm3

    ID of block: Epsilon

  12. So, right now we have an ID for at least one of the blocks in each color.

    I think the final answers are:

    Alpha- paper white
    Beta- black
    Delta- milky white
    Gamma- clear
    Epsilon- gray

    If you have any contradictions please let me know!!!

  13. Correction:

    Volume:
    V= l x w x h
    V= 3.10 cm x 2.35 cm x 8.10 cm
    V= 59.0 cm3

    Mass
    m=70.50 g

    Density:
    D=m/V
    D= 70.50 g/ 59.0 cm3
    D= 1.19 g/cm3

    Since the density of my block is 1.29 g/cm3, I believe that my block is the Gamma block because the gamma block has a density of 1.17 g/cm3 which is closest to my block.

    • correction to my correction:
      I had the clear block!!!!

      Volume:
      V= l x w x h
      V= 3.10 cm x 2.35 cm x 8.10 cm
      V= 59.0 cm3

      Mass:
      m=70.50 g

      Density:
      D= m/V
      D= 70.50g/ 59.0 cm3
      D= 1.19 g/cm3

      Since the density of my block is 1.19 g/cm3, I believe that my block is the Gamma block because the Gamma block has a density of 1.17 g/cm3 which is the closest to my block’s density value.

  14. clear block:
    V= l x w x h
    V=10.5 cm x 3.90 cm x 1.20 cm
    V=49.1 cm3

    m = 59.382 g

    D= m/V
    D= 59.382 g/49.14 cm3
    D=1.17 g/cm3
    my block is the gamma one

  15. I give myself 4 stars this week. I kept up and even got ahead in the technology assignment we did. I printed out worksheets and handouts ahead of time, too. I did not give myself five stars because I got a little confused and overwhelmed today. I couldn’t remember how to do certain parts of the technology assignment and fell a little behind in class.

  16. This week, I would rate myself a 3/5 stars because I worked hard and did all of my work. Even though I understood and followed the assignments everyday, I struggled some with following the steps and I got confused and a little behind. I also did not do too great on the test, but I am ready to pick back up Monday and work harder!

  17. This week I would rate myself a 3 out of 5 stars. I got all of my assignments done in class, and I kept up with all of my homework pretty well. I did not do as well on my test as I would have liked to. I will definently be studying harder for the next test so I can improve.

  18. This week I would rate myself a 4 out of 5 on the entire week. I would give myself this rating because I did very good with time management, getting my school work done, and studying for tests and quizzes. However, there are probably some things that I could have done better, like paying more attention during Chapel.

Leave a Reply to L Allen HC1 Cancel reply

Your email address will not be published. Required fields are marked *