Rango's Investigation
Introduction:
The Scientists went over this lab to learn about Chemical and Physical Properties. The Scientist also learned the
formula to density, and the differences between mass and weight. The study was performed to see who poisoned
Rango. The data the Scientist gathered was the suspects, and what the suspect had; like if the suspect was holding Zinc,
Salt Water, NaCI (Salt or Sodium), and a light hotdog. The Scientist also gathered information by doing experiment to
tell which substance is the crime scene. An example like figuring out the melting point of lemonade.
Hypothesis:
The scientist knows that the manipulated variable will change the responding variable because the manipulating
variable does not change through the experiment. If the manipulating variable changes the responding could
possibly stays the same. The responding variable is the change after the experiment. So when the scentist does
reactivity to the Sodium Polycrylate, the powder is the manipulating variable and what the powder is going to be
after the experiment is the responding variable. With the Scientist hotdog was going to be the Regular in my
opinion because using my senses which is qualitative, the hotdog looked and even smelled like a regular hotdog at
the crime scene. The powders were harder to identify because the y all looked white, so the Scientist think the is
powder sugar or salt. The wraps were hard too because the scientist does not know a whole bunch of wraps so the
Scientist just thought it is aluminum. The drinks were not that challenging the Scientist just thought it was a simple
cup of water.
Material:
Glass Graduated Cylinder
Glass Test Tube
Regular Hotdogs
Hot Plates
Test Tube Racket
Light Hotdogs
Well Plate
Microscope
98% Fat Free Hotdogs
Forceps
Vernier Lab Quest
Sucrose
Glass Beaker
Temperature Probe
Sodium Bicarbonate
String Rod
Conductivity Probe
Sodium Polyacrylate
Sodium Chloride
Ascorbic Acid
Pure Water
Rubbing Alcohol
Acetic Acid
Grape Drinks
Lemonade with Pulp
Plastic
Aluminum
Zinc
Magnesium
Iron
Sulfur
Procedures:
Powders: Sucrose, Sodium Bicarbonate, Sodium Polyacrylate, Sodium Chloride, Acetic
Acid
Solubility
Step 1: The scientist gets a glass beaker
Step 2: pours water in the glass beaker
Step 3: pour the Sucrose in the glass beaker with the water
Step 4: stir the sucrose and the water with a string rod
Step 5 if the it dissolve the Sucrose is soluble if not the Sucrose is insoluble
Step 6: record the reading on the data paper
Repeat for other powders
Crystallinity
Step 1: take the bag of Sucrose
Step 2: put the bag under the microscope
Step 3: then put your eye ball on the microscope
Step 4: record the data on the data paper
Repeat for other powders
Melting Point
Step 1: get the powder out the bag
Step 2: pour the powder on the hotplate
Step 3:
Data:
Drinks
Observations
PC:
PC:
PC:
PC:
CC:
CC:
Color
Boiling Point
Optical
Property
Density
Reactivity
Flammability
Transparent
Denser than
acetic acid
None
Transparent
Most Dense
Nothing white
powder did not
mix or dissolve
Nothing just
like pure water
Pure water
Clear, Cold
Clear
100 Degrees
Celsius
Its Rubbing alcohol
Clear, Cold
Clear
Salt water
Clear, Cold
Clear
38.3 Degrees
Celsius
Transparent
Denser than
pure water
Vinegar, Acetic Acid
Clear, Cold
Clear
42.9 Degrees
Celsius
Transparent
Denser than
grape
Grape drink
Grape, Purple, Cold
Purple
49.8 Degrees
Celsius
Opaque
Denser than
lemonade
Nothing
powder sank to
the bottom, no
mix
Bubbled up
then died
down, white
Turn green
then fizzed
then turned
back to purple
It is very
flammable
None
None
None
Lemonade with pulp
Lemon, Yellow, Little stuff
init (pulp, Cold)
Crime Scene Liquid
Wraps
Yellow
45 Degrees
Celsius
100 Degrees
Celsius
PC:
Opaque
Least Dense
Transparent
PC:
Denser than
Acetic Acid
PC:
Luster
Malleability
Density
Texture
Clear
Obs.
PC:
Fizzed then
died down
Nothing
None
None
CC:
CC:
Reactivity
Flammability
` flammable pu
toxic fumes in
the air
Turns black n
flammable
Plastic
See through, easy to brake
Shiny
Yes
.8
Smooth
Nothing
Aluminum
Small easy to wrinkle up
Shiny
Yes
.6
Rough
Late reaction
fizzed up a gas
magnesium
Black pieces
Dull
Yes
.10
Smooth
Flammable
really bright
Iron
Black small, sandy
Dull
Yes
.4
Sandy
Dissolved,
smell unique,
and has a gas go
I the air
The Acetic
Acid raised in
the well plate,
bubble late
Zinc
Silver
Shiny
Yes
.6.6
Smooth
Nothing,
Bubbler
Turns black
nonflammable
Sulfur
Little chips, yellow
Dull
Yes
Shiny
Yes
Crime Scene Wrap
Powder
Sucrose, table
sugar, C12H22O11
Obs.
White
.25
Repeating
Hard Chips
.6
Nothing
Rough
Late reaction,
fizzed up a gas
Flammable
sparks
Nothing
Turns black
PC:
PC:
PC:
PC:
CC:
CC:
Florescence
Solubility
Cry1stallinty
Melting Point
Reactivity
Flammability
None
Soluble
Really close
crystals
160- 180 degrees
Celsius
Nothing
Nonflammable
Insoluble
round
270 degrees
Celsius
Baking soda,
NaHCO3
White
None
Sodium
polyacrylate, in
diapers
White
None
Soluble then
turned into a solid
Little crystal
None
C3H3NaO2
Fizzed up then
died
Turns into a solid
Put the fire out
Nonflammable p
out a little bit
Hot
Sodium chloride,
salt, NaCl
White
None
Soluble
Round
800 degrees
Celsius
Nothing
Nonflammable
Ascorbic acid,
Vitamin C, C6H8O6
White
None
Soluble
Round and small
crystal
192 degrees
Celsius
Nothing
Nonflammable
Crime Scene
Powder
White
None
insoluble
Little crystals
270 degrees
Celsius
Fizzed up then
died
Hot dogs
Reg. hotdog
Obs.
Nonflammable
PC:
PC:
PC:
PC:
CC:
CC:
Mass PreSqueezed
6.5g
Mass PostSqueezed
7g
Density
Color
Reactivity
Flammability
.9g
Dark Brown
nothing
Flammable
Inside pink
Light Hotdog
11.5g
11g
1.10g
Brown
Turned dark brown
Flammable
Flammable
Inside orange
Turned into the
color of substance
(Black)
Dark brown
It is reactive
Flammable
Inside orange
98% fat free
hotdog
14g
8.5g
13.5g
1.08g
9g
.9g
Crime Scene
Hotdog
The percentage of who did the crime scene. Here are the suspects in a pie graph…
10%
13%
7%
Wicked Witch
Luke Sywalker
15%
Dorothy
Jimmy Neutron
Sponge Bob
55%
Conclusion
Light Brown