List the names of the 6 experiments in the order in which they were performed.
#1 _______
#2 _______
#3 _______
#4 _______
#5 _______
#6 _______
Question 18
18.
1
1
1
1
1
1
Question 25
25.
Question 26
26.
Question 27
27.
Question 28
28.
In Experiment #1, the color changed from _______ to _______ .
Question 29
29.
Question 30
30.
Question 31
31.
Question 32
32.
Question 33
33.
Question 34
34.
Question 35
35.
What was the name of the new substance (the white bio-plastic) created in Experiment #6?
Please only type the one-word answer, do not answer in sentence form.
Question 36
36.
EXTRA CREDIT: When bubbles form in a liquid, how do we know when it is a chemical change (effervesce) and not just a state of matter change?
Extra points if you can correctly use one of our experiments to support/explain your answer.
Question 37
37.
Sort each property into the correct category. You do not have to drag them, you can just click the property and then click the category.
Solubility
Tarnish
Corrosive
Boiling Point
Temperature
pH Level
Conductivity
Viscosity
Effervesce
PHYSICAL PROPERTIES
CHEMICAL PROPERTIES
You normally use your 5 senses to detect...
Chemical properties
Physical properties
Physical changes... (select the one that is true)
cannot be undone
form a new substance
release light or heat exothermically
can alter a current substance's state of matter (solid to liquid for example)
Wood rotting
Cracking a Glow-stick and making it glow
Bread Rising
Mixing cookie dough ingredients
Banana peel turning brown
Using heat to blow glass into a vase
Blow Drying your hair
Hand Warmers
Sugar dissolving in water
PHYSICAL CHANGE
CHEMICAL CHANGE
Any characteristic we can observe or measure without changing the chemical composition of the substance
A. Physical Property
B. Chemical Property
C. Physical Change
D. Chemical Change
Changes to a substance's appearance/form but not its chemical composition
A. Physical Property
B. Chemical Property
C. Physical Change
D. Chemical Change
A characteristic of a substance that can only be seen by changing the chemical composition of a substance
A. Physical Property
B. Chemical Property
C. Physical Change
D. Chemical Change
These changes impact a substance's chemical composition, causing a new substance to be created
A. Physical Property
B. Chemical Property
C. Physical Change
D. Chemical Change
Which of the following is NOT an example of a physical change?
A. Gas burning in a car's engine
B. The metal roof warming and shining in the sunlight
C. Crushing aluminum soda cans
D. Water boiling in a pot
Which of the following is NOT an example of a chemical change?
C. Rust forming on an iron fence
A. Gas burning on a stove
D. Pancakes cooking on a griddle
B. A potato acting as an electrical conductor
One example of physical change is
D. Digesting Food
A. Burning Paper
B. Salt Dissolving
C. Grass Growing
One example of chemical change is
D. Alcohol Evaporating
C. Chalk being crushed into a powder
A. Heat changing water to steam
B. Leaves changing color in the fall
Every chemical change ...
Requires a chemical reaction to occur
Produces a new substance
Results in Physical changes as well
All of the above
Which investigation would provide evidence of a chemical change?
Spray Febreeze into the bathroom, as it mixes with the air, you smell the fresh scent.
Put an antacid tablet (like alkaseltzer) in water, and when the antacid and water mix, observe the bubbles that form as a new substance is created.
Heat water in a pan on a stove, and observe the boiling water and steam that forms
Blow air through a wand filled with soap solution, and observe the bubbles that form as the air becomes trapped.
Which of the indicators of change is categorized incorrectly?
Aluminum can is crushed
A sample of wood is burned
Salt is dissolved into water
Water boils and steam is produced
The reason for Ooblek's strange behavior is
Cornstarch is an absorbic powder, it has the ability to continue to absorb over time. Moving the Ooblek quickly speeds up the absorption process.
The long, thin cornstarch particles suspended in the water get tangled together when its moved too quickly
It's a scientific anomaly that scientists can only guess at.
The cornstarch is insoluble, causing it to continually try to hold onto its solid properties within the water
Identify whether each experiment was an example of a physical or chemical change by dragging it to the correct category.
Make sure each category is in numerical order so your answers are scored correctly.
Experiment # 1
Experiment #2
Experiment #3
Experiment #4
Experiment #5
Experiment #6
Physical Change
Chemical Change
Question 19
19.
Ooblek is an example of one of the four types of Non-Newtonian fluids called a dilatant or
_______ (two words)
Question 20
20.
In these types of non-Newtonian fluids, the _______ (type of property). of a liquid will increase when stress or pressure is applied, causing the fluid to behave like a solid.
Question 21
21.
What do we call a solid that forms from a liquid _______
Question 22
22.
In experiment #2, there were _______state of matter changes
Question 23
23.
Which state of matter change was responsible for the ice crystals that formed in experiment #2 _______
Question 24
24.
For a change to a substance to be considered “chemical” in nature, we must see _______(#) indicator(s) of chemical changes or properties.
Select both of the experiments that involved the chemical property of pH, whether we used chemicals that helped indicate it or changed the pH level during the experiment.
Experiment #1
Experiment #2
Experiment #3
Experiment #4
Experiment #5
Experiment #6
Select all of the experiments that involved an exothermic reaction taking place.
Experiment #1
Experiment #2
Experiment #3
Experiment #4
Experiment #5
Experiment #6
Select all of the experiments that had an unexpected color change occur.
Experiment #1
Experiment #2
Experiment #3
Experiment #4
Experiment #5
Experiment #6
Select all of the experiments that had a state of matter change occur (within the original substance.)
Experiment #1
Experiment #2
Experiment #3
Experiment #4
Experiment #5
Experiment #6
Select all of the experiments that experienced a PHYSICAL change in temperature.
Experiment #1
Experiment #2
Experiment #3
Experiment #4
Experiment #5
Experiment #6
The bubbles that formed in the water during experiment #2 were an example of effervesce
True
False
Experiment #5 showed both a new substance and a state of matter change.
True
False
Which Physical Change was NOT present in experiment #4?
Select all that apply
State of Matter
Change in Shape
Change in Size
Shift in Appearance - Texture
Which of the ABCD's of Chemical Change were not present in Experiment #4?
Select all that apply
Fire/Smoke
A new substance
Color Change Unexpected
Different Temperature or Odor
Bubbles, Fizzing, Foam
EXTRA CREDIT: Rearrange the substances below in order from the least dense (top) to the most dense (bottom) based on their behavior when the dry ice was placed underwater.
