Measuring
Liquid Volume
Temperature
Density
Observation
Inference
Quantitative
Qualitative
Review:
1.
2.
3.
4.
Everything is made of _________________.
Matter
________________
is described as anything that
Matter
has volume and mass.
Volume is The
___________________________.
amount of space an object takes up
Volume can be measured in two ways
Direct measurement w/ ruler (cm3)
1.
_____________________________________
Water displacement (mL)
2.
_____________________________________
Review:
5.
6.
Length _________,
You need the _________,
________
width
Height of
a solid regular object to find volume.
1
1mL equals ______
cm3 .
Look at the Sheet with the 3 lines

Using the cm or mm side of the ruler measure each
line to the nearest mm.

Put the first line of the cm side at the end of the line
on the paper.
Measure how long the line is
The line is 7.7 cm long
If you can convert your cm to mm like this
7.7 cm = 77 mm




What is the length of each line?
Measure in cm and mm
154
15.4
1. ____________cm
____________mm
6.1
61
2. ____________cm
____________mm
19.2
192
3. ____________cm
___________mm
Measuring Area
Measure the area Convert the cm to mm and
in cm.
find the new area.
L W
A
L
W
A
1.
2.
36
4140.
11.5
3.6
41.4
2.7
6.5
17.82
27
65
1782
7.29
27
27
729.
3.
2.7
2.7
115
Practice converting these Lengths
1. 17.4 cm or
1.4 cm
2. ______
3. 9.5 cm
or
14 mm
95 mm
or ______
5.1 cm
4. ______
5. 12.7 cm
174 mm
______
or
51 mm
127 mm
or ______
2*2*4 =16 cm3
1*1*4 =4 cm3
2*6*4 =48 cm3
4*2*3 =24 cm3
HW Reading a Metric Ruler
How many
cm
mm
90.5
905
39.7
397
22.1
221
82.5
825
HW Reading a Metric Ruler
How many
cm
mm
67.9
679
87.1
871
32.3
323
44.1
441
Liquid Volume
&
Volume of Irregular objects
1mL
2mL
.2 mL
.5mL
25 mL
36 mL
5.4 mL
14 mL
Read the Glassware Lab
Station
Maximum
Measurement
Minimum
Measurement
Volume of
water
B.
100 mL
100 mL
<100 mL
C.
225 mL
25 mL
150 mL
D.
100 mL
1 mL
84 mL
E.
500 mL
500 mL
<500 mL
F.
200 mL
25 mL
135 mL
G.
10 mL
.2 mL
3.8 mL
H.
50 mL
1 mL
41 mL
Station
Maximum
Measurement
Minimum
Measurement
Volume of
water
I.
1,000 mL
50 mL
552 mL
J.
25 mL
25 mL
< 25 mL
# of the block Mass of block g
1
2
7
9
46
128.2
18.5
9.5 to 13
Order from most
to least dense
2
1
3
4
-
2
1
7
9
Explain why you were able to
order the blocks by density even
though you only knew the mass.

You can use mass to organize the blocks
because the volume is the same for all blocks.
See an example…

Blocks 1,2,7,9 all have a volume of 17.6 g/cm3
so block two’s density is 128 / 17.6 = 7.28 and
block nine’s density is 9.5 / 17.6 = .5

Only the mass changes so you can organise the
density by looking at only mass.
K
H
Da
Base
D
25.6
1. 256 m = _____________
dam
2. 97.25 cm = _____________
mm
972.5
3. 952 dag = _____________
9,520. g
4. .574 m = _____________
mm
574.
5. 5.287 dL = _____________
.05287 daL
C
M
K
H
Da
Base
D
785,300. m
6. 785.3 km = _____________
7. 84.363 L = ____________
843.63 dL
8. 872 hm = _____________
87,200,000 mm
9. 95,824 dam = ___________
9,582,400 dm
10. 8.26 kL = _____________
dL
82,600
C
M
6
mL
12
60
mL
30
3.2
mL
4
mL
mL
mL
1.6
.4
4
mL
mL
mL
3.4
2.66
1.5
mL
mL
mL
4.5
mL
8
mL
5.2
mL
Practice with
Liquid Volume
3
30
mL
mL
18
mL
.8
mL
15
mL
.6
mL
3.8
1.6
mL
mL
2
12
mL
mL
Finding Solid Volume
Through Water
Displacement
7 mL
38 mL
33 mL
20 mL
40 mL
40 – 20 = 20 mL water and 20 mL rock
Place a known quantity of water in the GC. Add object calculate
change in water level. Change in the mass of the object.
4 mL
13 mL
9 mL
.4 mL
5 mL
3 mL
4 mL
1 mL
1.8 mL
8 mL
4 mL
16 mL
3 mL
9 mL
Temperature

Measure of the average Kinetic Energy of the
particles in a sample of matter

What is Kinetic Energy?

The energy of motion.
The units of Temperature








What Units are used in the US?
Fahrenheit Fo Creator: Daniel
Fahrenheit
What units are used in most of
Europe?
Celsius Co Creator: Anders Celsius
What is the Celsius scale based on?
What units are used by scientists?
Kelvin K
Why is Kelvin not in degrees?
Kelvin

Developed by Lord Kelvin in the mid 1800’s

What happens at absolute zero?

Absolute Zero is the lowest temperature.
It is the place where all atomic
motion stops.
What Countries still use Fahrenheit?





USA
Burma
Liberia
Jamaica
Belize
Fill in the table.
Conversion Formulas
C to F
O
F = ( 9/5 X C )
+ 32
F to C
O
C = 5/9 X ( F
- 32 )
C to K
K = OC + 273
K to C
O
C = K - 273
Hint: 9/5 = 1.8
& 5/9= .556
Fill in the table using the formulas.
Temperature Scales
Fahrenheit
OF
Water Boils
Body
Temperature
Room
Temperature
Water
Freezes
Celsius
OC
Kelvin
K
212
100
373
98.6
37
310
68
20
293
32
0
273
Comparing the Scales
1. “The weather forecaster predicts that today’s high will
be 70 o .”
Fahrenheit
Which scale is being used? ____________
oC
21.1
On the Celsius scale? ___________
294.1 K
On the Kelvin scale?____________
Comparing the Scales
2. “It was so cold yesterday that the temperature only
reached 275!”
Kelvin
Which scale is being used? ____________
oC
2
On the Celsius scale? ___________
oF
35.6
On the Fahrenheit scale?____________
Comparing the Scales
3. “Today’s temperature of 42o in Chicago set a record
high for the month of August.
Celsius
Which scale is being used? ____________
315 K
On the Kelvin scale? ___________
oF
107.6
On the Fahrenheit scale?____________
Temperature Homework
Celsius
Fahrenheit
212
Kelvin
1.
100
373
2.
0 (freezing point) 32
273
3.
37
98.6
310
4.
-273
-459
0 (absolute zero)
5.
20
68
293
6.
12
53.6
285
7.
-11.1
12
262
8.
9.
-261.1
30
-437.8
86
12
303
Celsius
Fahrenheit
Kelvin
10. -1.1
30
272
11. -243
-405
30
12. 50
122
323
13. 10
50
283
14. -223
-369
50
15. 75
167
348
16. 23.8
75
297
17. -198
-324
75
Temperature Homework
Celsius
Fahrenheit
Kelvin
18. 120
248
393
19. 148
300
422
20. 26.8
80.3
300
21. Temperature: Average kinetic energy of the partoicles
in a substance.
22. Absolute Zero: All Kinetic energy in a substance is
gone. Temperature where all atomic motion stops.
The numeric value is 0 K.
Metric Conversions
illi
enti
eci
eca
ecto
ilo

Base units
K H Da B D C M
Base units are Meters, Liters, Grams, Watts,
Newtons, and any other units we learn this
year.
K H Da B D C M
Kyle
Hates
Dates
Because
Dates
Cost
Money
K H Da B D C M









Let’s look at a metric ruler…
How many meters are in a meter?
1
How many decimeters are in a meter?
10
How many centimeters are in a meter?
100
How many millimeters are in a meter?
1000
K H Da B D C M







Let’s look at a metric ruler in the other direction…
How many meters are needed to make a decameter?
10
How many meters are needed to make a hectometer?
100
How many meters are needed to make a kilometer?
1000
K H Da B D C M




47424.6mL= _____________hL
.474246
Put your finger on the units that you are given
which are mL.
Move your finger left to hL, and count the
number of moves.
Five to the left.
Move the decimal the name number of places
in the same direction.
K H Da B D C M




5.0342 kL= _____________L
5034.2
Put your finger on the units that you are given
which are kL.
Move your finger left to L, and count the
number of moves.
Three to the right.
Move the decimal the name number of places
in the same direction.
1.
2.
3.
3.77
9.2
0.037
3770mL =_________L
9200L = _________kL
37g = ___________kg
4.
5.13 kL
5130L =________
5.
6.
32.4
6.3
3240mg = ________dg
6300m = ________km
7.
8.
9.
23.044daL=_______
24.9kg ___________
g 430000g= ________hg
24,900
4,300
230,440mL
10.
11.
12.
1.5733
412L = _________
157.33cm= _______m
412,000 mL 230 L= __________kL
.23
13.
14.
15.
0.021
7.2983
1,230
210mL= ________daL
7298.3mL= _______L
1.23dam= _______cm
16.
17.
18.
5,200
165,000
2.3
520L= __________dL
165m= _________mm
230cm= __________m
19.
417,000
417km = ________m
20.
21.
.0072344
281,000
723.44mg= _______hg 281 m= _________mm
Metric Conversion
1. 256 m = ___________
dam
25.6
11. 36 mm = ___________
cm
3.6
2. 97.25 cm = ___________
mm
972.5
12. 857 cm = ___________
mm
8,570
3. 952 dag = ___________
9,520,000 mg
13. 8.52 mg = ___________
.00852 g
4. .574 m = ___________
cm
57.4
14. 975 hm = ___________
9,750,000 cm
5. 5.287 dL = ___________
mL
528.7
15. 9,824 cm = ___________
m
98.24
6. 785.3 km = ___________
785,300 m
16. 74.21 cm = __________
.07421 dam
7. 84.363 km = __________
843,630 dm
.000254
17. .254 g = ___________
kg
8. 872 km =872,000,000
___________ mm
18. 96 mm = ___________
.00096 hm
9. 95,824 dam = 9,582,400
_________ dm
19. 12.5 cm = ___________
m
.125
10. 8.26 kL = ___________
82,600 dL
20. .85 mL = ___________
.00085 L
Metric Conversion
21. 86 g = __________ mg
31. .24 mg = __________ kg
22. 87.2 mm = __________ cm
32. 7.4 kL = __________ L
23. 1 dm = __________ cm
33. 874 m = __________ cm
24. 973.5 cm = __________ dL
34. 1 hm = __________ km
25. .534 cm = __________ m
35. 8.412 mg = __________ dg
26. 984 g = __________ kg
36. 68.2 mg = __________ g
27. 8.64 dam = __________ hm
37. 8.5743 cm = __________ km
28. 64.3 mL = __________ L
38. 95,870 dam = _________ mm
29. 8.47 km = __________ m
39. 547 kL = __________ mL
30. 74,201 mm = __________ km 40. 6.5 km = __________ hm
Finding Density


Density is the
ratio of the mass
of the substance to
the volume of the
substance at a
given temperature.
Density has units
of g/ cm3 or g/mL
for liquids and
solids.
Density Worksheet
M
D
V
Density Calculations
Worksheet I
1. Find the unknown quantity
A) D= 3 g/mL
V=100mL
M= ?
B) D= ?
V= 950 mL
M= 95 g
C) D= 0.5 g/cm3
V= ?
M= 20 g
M= D * V
D= M/V
V= M/D
3 * 100=
95 / 950=
300 g
= .1 g/mL
20 / 0.5 =
= 40 cm3
2. Find the unknown quantity
(CONVERT FIRST to g or mL)
A) D= 24 g/mL
B) D= ?
V=1.2L=
V= 100 mL
____________mL
M= 1.5 kg
1,200
M= ?
____________
g
1,500
M= D * V
3 * 100=
300 g
C) D= ?
V= 0.52 L
__________mL
520
M= 500 mg
____________g
.5
D= M/V
1,500 / 100=
D = M /V
= 15 g/mL
.5 / 520 =
= .00096 g/cm3
WORD PROBLEMS
2. Mercury metal is poured into a graduated
cylinder that holds exactly 22.5 mL. The
mercury used to fill the cylinder weighs 306.0
g. From this information, calculate the density
of mercury.
D = M = 306 g = 13.6
V 22.5 mL
g/mL
1. A block of aluminum occupies
a volume of 15.0 mL and weighs
40.5 g. What is its density?
D = M = 40.5 g = 40.5 g = 2.7
V 15 mL 15 cm3
g/cm3
3. What is the weight of the ethanol
that exactly fills a 200.0 mL container?
The density of ethanol is 0.789 g/mL.
M = DxV = 0.789 g/mL x 200 mL = 157.8
g
4. A rectangular block of copper metal
weighs 1896 g. The dimensions of the
block are 8.4 cm by 5.5 cm by 4.6 cm.
From this data, what is the density of
copper? (hint: find the volume of a
block first)
V = L x W x H = 8.4 cm x 5.5 cm x 4.6 cm =
212.52 cm3
THEN
D = M = 1896 g
V 212.52 cm3
= 8.92
g/mL
5. What volume of silver metal will
weigh exactly 2500.0 g. The density
of silver is 10.5 g/cm3.
V = M = 2500 g
D 10.5 g/cm3
= 238.1
cm3
6. Find the mass of 250.0 mL of
benzene. The density of benzene is
0.8765 g/mL.
M = DxV = 0.8765 g/mL x 250 mL = 219.13
g
7. A block of lead has dimensions of
4.50 cm by 5.20 cm by 6.00 cm. The
block weighs 1587 g. From this
information, calculate the density of
lead.
V = L x W x H = 4.5 cm x 5.2 cm x 6 cm =
140.4 cm3
D = M = 1587 g
V 140.4 cm3
= 11.3
g/cm3
8. 28.5 g of iron shot is added to a
graduated cylinder containing 45.50
mL of water (V1). The water level rises
to the 49.10 mL (V2) mark. From this
information, calculate the density of
iron.
V = V2 – V1 = 49.1 – 45.5 = 3.6 mL = 3.6 cm3
D = M = 28.5 g
V
3.6 cm3
= 7.92
g/cm3
1. A Silver-colored coin has a mass of 18.9 grams and a
volume of 1.12 mL. Is the coin pure silver? (Hint: The density of
silver is 10.5 g/mL.)
Work
D=M
V
Answer
18.9
1.12
16.9 g/mL
No
2. What volume would a 0.871 gram sample of air occupy if the
density of air is 1.29 g/L?
Work
V=M
D
Answer
.871
1.29
.68 L
3. Pumice is volcanic rock that contains many trapped air bubbles. A
225 gram sample occupied 236.6 mL. 1. What is the density of
pumice? 2. Will pumice float on water? The density of water is 1.0
g/mL.)
Work
Answer
D=M
V
225
236.6
1. .95g/mL
2. yes
4. A cup of sugar has a volume of 237 mL. What is the mass of the
cup of sugar if the density is 1.59 g/mL?
Work
M= D * V
Answer
237 * 1.59
376.8 g
5. Which has the greater mass, 1 liter of water or l liter of gasoline?
The density of water is 1.00 g/mL and that of gasoline is
approximately 0.68 g/mL.
Work
Answer
M= D * V
1 * 1 = 1 g/mL
1 * .68 = .68 g/mL
Water has more
density
6. A crumpet recipe calls for 175 grams of flour. According to Julia
Child's data, the density of flour is 0.620 g/mL. How many mL of
flour are needed for this recipe?
Work
V=M
D
Answer
175
.620
282.25L
7. A sample of lead is found to have a mass of 32.6 g. A graduated
cylinder contains 2.8 mL of water. After the lead sample is added to
the cylinder the water level reads 5.7 mL. Calculate the density of the
lead sample.
Work
Answer
D=M
V
32.6
2.9
11.2
g/cm3
8. From their density values, decide whether each of the following substances will sink
or float when placed in sea water, which has a density of1.025 g/mL. Place an S on the
line if it sinks and an F on the line if it floats.
Float B. Asphalt l.2 g/cm3 __________
Sink
A. Gasoline 0.66 g/mL ________
Float
Sink
C. Mercury 13.6 g/mL __________D.
Cork 0.26 g/ cm3 __________
Float F.Plastic Bag .88 g/ cm3 ________
Float
E. Distilled water 1 g/mL ______
Observation Inference
Observations vs. Inferences
Observations: Something that you experience with
your 5 senses
Inferences: a statement, conclusion or reflection
Quantitative: an observation that is expressed using
numbers
Qualitative: An observation that is described in
terms of the qualities of the object (made using 5
senses)
REMEMBER!

Observations must be specific and accurate, not
relative, so that it means the same to everyone.

Example:



Qualitative observations –




Incorrect - the burning bag smelled nasty
Correct - the burning bag smelled similar to rotten eggs
Example: Mr. Jones has blue eyes
Quantitative observations
Example: Mr. Jones has two eyes
Inference –

Example: you leave the movie theater and see the ground
is wet so you infer that it rained.
Obs.
Inf.
Obs.
Obs.
Inf.
Inf.
The ice cream in the freezer was
melted
The lights in the house go out during
a thunderstorm.
Water is splashing down the
window.
Using what you just learned!
On the next slide there is a photo.
Use the photo to make. . .
inferences
observations
qualitative observations
quantitative observations
What do you think?
Review For the
Intro to Science Quiz
Read the Ruler in cm & mm!
59.9 cm
599mm
54.9 cm 549 mm
79.7 cm 797 mm
46.5 cm
465 mm
Fill in the Formulas for a
rectangle

Side + Side + Side + Side
Perimeter= ____________________

Length * Width
Area =________________________

Length * Width * Height
Volume: ______________________
W
L
Shape 1
H
Shape 1
200 mm
L= 20 cm _________
50 mm
W= 5 cm __________
60 mm
H= 6 cm __________
52
P= __________
cm
Shape 2
22 dm
L= 2.2 m _________
W= .6 m __________
6 dm
H= .5 m __________
5 dm
54
P= __________
dm
1.1 or 1.32 2
A= __________m
660
3
V= ___________dm
W
L
A= __________cm
100 or 120 2
Shape 2
H
3
600,000
V= ___________mm
Metric Conversion
K
H
Da Base
1. 86 g = _____________
mg
86,000
2. 87.2 dam = _____________
dm
8,720
1,776,000 mm
3. 1,776 m = _____________
4. 73.5 cL = _____________
dL
7.35
.22534
5. 22.534 cm = _____________
m
6. 984 g = _____________
kg
.984
7. 48.647 kg = _____________
dag
4864.7
D
C
M
Temperature Review
Celsius
1.
2.
6.67
Kelvin
44
279.81
168.8
76
3.
246.85
4.
31.1
36.85
5.
Fahrenheit
476.33
349
520
88
304.1
98.33
310
Average KE of particles in a substance
What is temperature? ______________________________________
O C is the
What is the difference between 0 oC and 0 K? _________________
Freezing point of water but 0K is where atomic motion stops.
_______________________________________________________
Review Liquid Volume
Always read meniscus down.
3
1
1mL = _____cm
The density of
water is
3
1
_______g/cm
58 mL
33 mL
14.5 mL
Explain how you would find the volume
of the rock. Place water in the





6mL
7 mL
Rock’s volume = 1mL
Graduated cylinder
Measure the water
Place object in the
water
Measure level of
water and object
Subtract water from
total
The difference is the
volume of the object
5.6 - 4.8 =
.8 mL
38 - 32 =
6 mL
5 – 3.4 =
1.6 mL
69 – 65 =
4 mL
What is the formula for
Volume?
 Length * Width * Height
V = L * W * H
 What is the formula for
density?

M
D= M / V
M= D * V
V= M / D
D
V
Density Review
Volume (cm3)
Mass (g)
1.
12
2.
8
3.
2
30
5.
19
6
0.5
500
4.
Density (g/cm3)
10
16
50
1.36
22
4.75
4
does not effect density
How does sample size relate to density? Size
_______________________
Slope is the density
How does slope relate to density? ____________________________
The steeper the slope the higher the density….
_______________________________________________________
Observations vs. Inferences
Observations: Something that you experience with
your 5 senses
Inferences: a statement, conclusion or reflection
Quantitative: an observation that is expresses using
numbers
Qualitative: An observation that is described in
terms of the qualities of the object (made using 5
senses)
Make
observations
& inferences
about this
photo. Are
they
Quantitative
or
Qualitative?
E Density = ___________
4 g/cm3 Sink
The Density of 5 Samples of Matter
2 g/cm3 Sink
D Density = ___________
3
1 g/cm Sink/Float
C Density = ___________
.75 g/cm3 Float
B Density = ___________
MASS (g)
.5 g/cm3
Float
A Density = ___________
VOLUME (cm3)
Reading a Metric Ruler
How many
cm
mm
90.1
901
82.9
829
18.9
189
88.7
887
77.1
771
Quiz Friday










Using / reading a metric ruler
Perimeter, Area, Volume of rectangles
Temperature conversions
Temperature scales- Fahrenheit, Celsius, Kelvin
Define: Temperature & Absolute Zero
Metric Conversions: Know what the Meter, Liter and
Gram measure.
Density
Reading a Graduated Cylinder
Using a graduated cylinder to measure the volume of
irregular solids
Quantitative & Qualitative Observations & Inferences
Lab Skills Review Lab
1. Which pieces of lab equipment would be useful for
pouring liquids? Beaker or Graduated Cylindar
2. Which pieces of equipment are measuring devices?
Give examples…
3. What are some uses of the other items that are nonmeasuring devises? Microscope, Scissors, Goggles,
Hand Lens, maybe Graph Paper
4. Which piece of equipment will protect your eyes from
splashes of liquid, shattered glass and flying chips of
rock? Goggles
Tool
Temperature of a liquid Thermometer
Units
oC
Mass of an object
Triple Beam Balance Grams
Duration of an event
Timer
Sec.
Length of an object
Ruler
cm
Volume of a liquid
Graduated Cylinder
mL
Volume small regular
solid
Volume large regular
solid
Volume irregular solid
Ruler
cm3
Meter Stick
m3
Graduated Cylinder
mL
Density: is the ratio of the mass of an
object to its volume
8. A kilogram of rocks and a kilogram of feather
(finch) have the same mass, but the rocks take up less
space. The rocks are said to be denser than the
feathers.
What instruments would be needed to determine the
density of a small pebble? Balance and ruler or
Graduated cylinder.
Describe the procedure you would use to find the
density. Mass item, measure volume, divide.
What is the formula for density? D = M / V
What Should we learn?
Mass (g)
The Density of Galena
9
8
7
6
5
4
3
2
1
0
4
8
12
16
20
Volume (cm3)
24
28
32
How does
sample size
relate to
density?
E Density = ___________
4 g/cm3 Sink
The Density of 5 Samples of Matter
2 g/cm3 Sink
D Density = ___________
3
1 g/cm Sink/Float
C Density = ___________
How does
slope relate to
density?
.75 g/cm3 Float
B Density = ___________
MASS (g)
.5 g/cm3
Float
A Density = ___________
What kind of
items would
sample size E
& A represent?
VOLUME (cm3)
Density of objects lab
Aluminum Bar
A Cube
B Cube
Steele Sphere
Glass Sphere
MASS (g)
VOLUME (cm3)
DENSITY (g/cm3)
33.2
5
5
8.5
2.9
11.25
1.7
1.7
2
2
2.95
2.94
4.25
1.45
•Which item has the highest density? Steel Sphere
•Which item has the lowest density? Glass Sphere
•Which of the two cubes had the highest density? Both very close
•Using the information in the chart above. What metal do you think
cube A is made of? Aluminum
Cube B? Aluminum
•Look at the data you have on the bar and the cubes. Does the
density of an item change with An increase in volume? No
MASS (g)
VOLUME (cm3)
DENSITY (g/cm3)
________
3.9
2
1.95
Rock
________
5.1
2
2.55
Rock
________
5.9
2
4.22
Rock
•What effect does the shape of the rock have on density? No effect
•The rocks above make up much of earth’s crust. Using this
information what is the approximate density of earth’s crust? About
2.9 g/cm3
•Assume that a plastic bottle is heated and its volume expands but
its mass stays the same. What will happen to its density? Decrease
Density of Water
1.
2.
3.
4.
5.
6.
7.
Mass the cylinder
Place 50 mL of water into the cylinder
Mass the water and cylinder
(Cylinder + water) - cylinder = water
So v = 50 cm3 And m = 49.1 g
49.1 / 50 = .98 g/ cm3
Very close to the true density of 1 g/cm3
Substance
Cube #
Mass
Volume
Density
S or F
Acrylic
Aluminum
Brass
Copper
Oak
Pine
Polypropylene
1
2
5
3
8
9
7
18.1
44.0
136.9
143.1
13.1
7.8
14.0
15.6
15.6
15.6
15.6
15.6
15.6
15.6
1.2
2.8
8.7
9.1
0.80
0.50
0.90
S
S
S
S
F
F
F
PVC
Steel
6
4
22.5
126.1
15.6
15.6
1.44
8.1
S
S
* Look back to the last page how do your densities compare to the ones listed on the
front. If they are all similar explain what steps you took to ensure accuracy. If they are
very different explain what you could do in the future to ensure accuracy.
* Look at your predictions for floating and sinking. Using the densities you calculated
how can you be certain that an object will float or sink in water based on its density
alone?
Type of substance: Acrylic
Mass (g)
One block
Both blocks
18.1
36.4
Volume (cm3) Density (g/cm3)
15.6
31.2
1.2
1.2
DENSITY OF ACRYLIC BLOCKS
35
30
MASS (g)
25
20
15
10
5
0
18.1
36.4
VOLUME (cm3)
Sink or
float?
S
S

As volume increases mass _______________.

As volume decreases mass __________________.

As the mass and volume of a substance increase, the
density of that substance ____________________.

Look at the slope of the line. What does the slope
represent? __________________________

What do you predict would happen to density if
there were three blocks? _____________________
Measuring Liquid
Volume Quiz Help
Step 1

Work out what it
counts by…
Let’s focus on the distance between
the two numbers…
59
58
57
56
55
54
53
52
51
See how
there are 10
lines
between 50
and 60 ?
It must count by 1 mL…
59
58
57
56
55
54
53
52
51
Step 2

Now we read the
water level. Because
it counts by 1mL and
we don’t guess the
answer must be a
whole number.
Look at where the meniscus is
59
58
57
56
55
54
53
52
51
56 mL
Step 1 again.

Work out what it
counts by…
Let’s focus on the distance between
the two numbers…
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
See how
there are
also 10 lines
here
between 3
and 4?
It must count by .1 mL…
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
Step 2
again
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
Now we read
the water level.
Because it
counts by .1mL
and the answer
must be a whole
number with
one decimal
point.
Look at
where the
meniscus is
Must be
4.3 mL