Starting Point 2.14.13
Late = Up to Unit Exam @ 75%. After = 50%
Absent = # of days+1 @ 100% credit. Both must be Complete/Corrected.
Welcome to Science!!!
Science Due:
1.
Mass/Volume/Density Lab
Do:
1.
Discuss Density Lab.
2.
Define Mass/Volume/Density in
notes.
Homework
1.
Study for Quiz.
Starting Point
(Copy and Answer)
Q/D: Density = Mass/Volume,
Mass = 400.0g, Volume =
1000.0 ml, Density = ???
A:
>>>>>>>>>>>>>>>>>>>>>>
>>>>
Notes: N/A
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Name of Object and
“Matter”ial
Volume
(ml
or cm3)
Mass (g)
Density
(g/ml or g/cm3)
1.Wood Cylinder
[π(1.25)2] x 20.2 =
99.11cm3
66.45g
0.67g/cm3
2. Plastic Die
(1.5)3 = 3.375cm3
6.0g
1.78g/cm3
2x2x6 = 24cm3
10.5g
0.4375g/cm3
(0.44)
4.Rubber Stopper
(55.0-45.0)ml = 10.0ml
11.8g
1.18g/ml
5.Wood Baby Block
(3.2)3 = 32.77cm3
18.5g
0.565g/cm3
(0.57)
6.Long Rectangular Wood
Block
12.5x3.8x2.0 = 95.0cm3
69.0g
0.73g/cm3
7.Large Rectangular Wood
Block
7.65x5.0x5.0 =
191.3cm3
84.4g
0.44g/cm3
(675.0-600.0)=75.0ml
174.5g
2.33g/ml
(625.0-525.0)=
100.0ml
271.5g
2.72g/ml
20.0 ml
32.5g
1.625g/ml
3.Small Rectangular Wood
Block
8.Fractured Rock
9.Complete Smooth Rock
10.Plastic White Out
Bottle
1. Which objects will have similar density values?
2. Did any of the objects have similar/ matching density? Why?
3. Water has a density of 1.00 g/ml or 1.00 g/cm3. Would any of the
objects float?
4. Why were objects more dense?
5. Why were objects less dense?
6. Does the size of an object/substance effect the density of the
object/substance? Explain.
7. Does the shape of an object/substance effect the density of an
object/substance? Explain.
8. Does the material an object is made of effect it’s density? Explain.
No Credit on Labs until Lab Safety Contract turned in:
P3
L. Bee
K. Stalnaker
C. Valencia
P6
M. Berthelson
*T. Hermansen
L. Wilkinson
P7
R. Dos Santos
*D. Nguyen
L. Swapp-Mescheryakova