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!
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!
we can use water to see if the density is <1 or 1<
You can use a ruler to find volume (lxwxh)
Does someone want to help me zero this balance
You can use the balance to find the mass
can someone come help us zero our balance?
my grey block and clear block sunk in the water. this means they have a density higher than 1 g/cm^3
the clear block and grey block sunk in the water. this means they have a density higher than 1 g/cm^3
don’t forget to carry your measurements out to the hundredths place!
For the clear block I got a mass of 70.640g
Mrs. Skinner can you come zero our balance.
my clear block is 59.382g
Mrs Skinner, can you zero out balance
don’t forget masses may be different even if you have the same block color. however, density never changes! PS mrs skinner please keep singing it’s relaxing.
We got 1.17 g/cm3 for clear
For the paper white block block I got:
mass- 38.420 g
volume- 66.81 g
density- 0.5751 g/cm cubed
for my white block, i got a mass of 31.715 g
Milky white block floats, black block sinks
I got a volume of 59.34 cm3 for my clear block
wadsworth
for the grey block my measurements are as follows:
mass= 95.137 g
volume= 65.2 cm3
density= 1.46 g/cm3
i believe the grey block is epsilon.
Write down all of your measurements (mass and volume) so that we have evidence to back up our density values
if clear is 1.17 then black has to be the 1.42 because those are the only two that would sink since they’re over 1? I’m not sure its just a thought.
i think the spokesman should be Wadsworth too
Nick just put your comment in again. It did that to me too
The mass of the block block is 65.867 g
The mass of the milky white block is 61.531 g
I have milky white block.
Mass= 59.579 g
Volume= 6.61 cm x 3.88 cm x 2.55 cm = 65.40 cm3
D = m / V
D = 59.579 g / 65.40 cm3
D = 0.9110 g/cm3
CORRECTION:
Milky white block
Mass= 59.579 g
V= lxwxh
V= 6.61 cm x 3.88 cm x 2.55 cm
V= 65.4 cm3
D=m / V
D=59.579 g / 65.4 cm3
D=0.911 g/cm3
PREDICTION:
Milky white = Delta
Anyone else have paper white?
Im thinking paper white block may be Alpha.
if i’m the spokesperson what do y’all need me to do?
email her our results
Lead
For my black block, I got a volume of 60.57 cm3.
write down the mass and volume and density for your block so we can back up our data! don’t forget units!!!
I keep getting 0.875 for the density of the milky white block which is very wrong
Everybody show your calculations on the website (with correct number of sig figs and unit) and your final density. Also say what color block you have !!!
we have 3 minutes left in class I think
For the black block I got:
Mass – 110.372 g
Volume – 106.92 cm3
Density – 1.03 g/cm3
Help
my clear block had a mass of 57.382 g and a volume of 49.14 cm3
whats the density
paper white block:
volume- 66.81 cm3
mass- 38.420 g
density- 0.5751 g/cm3
My density for my black block is 1.41 g/cm3
alpha- paper white
beta- gray
delta- milky white
gamma- clear
epsilon- black
Any contradictions?
That’s what I got too
Show all your work ON the website !!
@mrs. Skinner do we all have to have the correct work or just the predictions?
Black block:
Volume- (7.32 cm) x (3.31 cm) x (2.50 cm)= 60.57 cm3
Mass- 85.673 g
Density- 1.41 g/cm3
Black Block:
Volume – (9.50 cm) x (4.52 cm) x (2.49 cm) = 107 cm3
Mass – 110.419 g
Density – (110.419 g) / (107 cm3) = 1.03 g/cm3
Paper White Block:
V=lwh
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
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= mass/volume
Density= 38.420 g / 66.8 cm3
Density of the paper white block = 0.575 g/cm3
Black 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
The density for my black block is 1.41 g/cm3.
hi everyone!! make sure you have posted all your data to the website so we can back up our final answers!!
for example (what you should probably include):
color of block
Volume (including ALL WORK & correct sig figs)
mass
Density (including ALL WORK & correct sig figs)
^^^ and for ALL of these make sure to have the correct units!!
Okay everyone! I have now discovered that my block is not black, but it is GRAY! I am so sorry for the confusion. Here is my new work!
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
The density for my gray block is 1.41 g/cm3.
Clear block:
Volume:
V=l x w x h
V= 3.10 cm x 2.35 cm x 8.10 com
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
Clear block:
Volume:
V=lwh
V=7.10 cm x 9.55cm x 1.25cm
V=84.76 cm3
Mass:
99.767 g
Density:
D=m/V
D=99.767 g/ 84.76 cm3
D=1.18 g/cm3
My clear block was the gamma block.
My volume should actually be 84.8 cm3
J – Volume sig figs?
White Block:
Volume:
V= l x w x h
V= 8.65 cm x 8.15 cm x 1.10 cm
V= 77.5 cm3
Mass:
m= 42.30 g
Density:
D= m/V
D= 42.30 g/ 77.5 cm3
D= 0.546 g/cm3
G – Mass sig figs?
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