1. 5 Minute Check 10/31/16
Sponge Bob notices that his pal Gary is suffering from slimotosis, which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr. Kelp will be a better cure. Sponge Bob decides to test this cure by rubbing Gary with seaweed for 1 week and having him drink Dr. Kelp. After a week of treatment, the slime is gone and Gary’s shell smells better.
1. What was the initial observation?
2. What is the independent variable?
3. What is the dependent variable?
4. This experiment had no control group, why is this a BAD thing?
Today’s Standard:
MS-PS1-6 - Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.*

2. Taking Care of Business
Friday we are going to take a test on everything we have gone over since our last test.

3. Unit 3 Date Assignment title Page # 09/27/16
Physical and Chemical Changes 1
09/28/16
Mystery Powder Investigation (3 Pages) 2
10/06/16
Reviewing It All 3
10/10/16
Chemical Equations 4
10/17/16
Massing Chemical Reactions Lab 5
10/18/16
Exothermic and Endothermic Reactions 6
10/19/16
Ice Cream Maker (4 pages) 7
10/21/16
Variables 8
10/31/16
Ice Cream Chemistry 9

4. “Ice Cream Chemistry” from the American Chemical Society
What happens to the texture of ice cream as the size of its ice crystals increases?
What is an emulsifier? What does it do?
Do fats and water naturally “want” to mix? Why?
What happens when you freeze ice crystals very quickly?
What does salt do to ice?
How much fat does “premium” ice cream contain? What does this do to the texture?
How creamy do you like your ice cream? What process would create that type of ice cream?

5. Engineering Challenge
Let’s read through the next page of our project today where you are going to have to come up with a design to make an ice cream maker.
Take out a piece of lined paper for your rough draft (DO NOT WRITE IN YOUR PACKET UNTIL I APPROVE YOUR DESIGN)

6. Ice Cream Maker: Engineering Challenge
Your principal loves ice cream. He has tasked you with designing a portable ice cream maker for them to use in the classroom.
Criteria:
Design, test, modify, and improve an ice cream maker that absorbs thermal energy by chemical processes, resulting in the “perfect” temperature and mixture of ice cream ingredients.
Constraints:
Ice cream must be produced in your final device within a 20-minute time period.

7. Ice Cream Maker: Engineering Challenge
Materials
Cooling Solution
Teacher supplied
Ice Cream Maker Device
Ice Cream Ingredients
Ice
Students will use materials from home. The materials should be recycled if possible. None of the cooling solution will damage your device.
Milk
Rock Salt
Sugar
Baking Soda
Students may bring in flavoring of their choice.
Calcium Chloride

8. Ice Cream Maker: Engineering Challenge
Design Prototype: Working with your group, create and label a sketch of your ice cream maker device. Include a sketch of your design and an explanation of how your device will monitor thermal energy movement in or out of the system.

9. Ice Cream Maker: Engineering Challenge
Sketch of Final Design Solution
Materials List
Explain how you will track thermal energy

10. Closing
Do you feel confident in your design?

11. 5 Minute Check 11/01/16 Today’s Standard:
Mr. Krabbs wants to make Bikini Bottoms a nicer place to live so he created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.
1. Which people are in the control group?
2. What is the independent variable and the dependent variable?
Today’s Standard:
MS-PS1-6 - Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.*

12. Taking Care of Business
Friday we are going to take a test on everything we have gone over since our last test.

13. Ice Cream Maker: Engineering Challenge
Today we are going to make sure all our paper work is filled out correctly!!

14. History of ice cream https://www.youtube.com/watch?v=jqi6MYW HfKk
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15. 5 Minute Check 11/2/16
What are the two most important components to the ice cream making process?
Why do we need to add something to the ice when making ice cream?
What are we tracking as we are making ice cream?
Today’s Standard:
MS-PS1-5 - Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.

16. Taking Care of Business
Friday we are going to take a test on everything we have gone over since our last test.

17. Ice Cream Maker: Engineering Challenge
Today you are going to make your ice cream!!

18. Evaluate Prototype Revisions:
Discuss with your group ways you can improve your device.
Complete the chart below indicating the revisions you chose to make with an explanation of WHY you want to change each of the components.

19. Ice Cream Maker Assessment
Complete the claim-evidence-reasoning graphic organizer below citing specific evidence from utilizing your ice cream maker device. Tie in your understanding of the “Science of Ice Cream” in the reasoning statement.
Claim
I can claim the reaction needed to make ice cream is ____________________. (endothermic/exothermic/no reaction)
Evidence
When using the designed ice cream maker model, thermal energy was tracked through the system by...
Reasoning

20. 5 Minute Check 11/3/16 How many atoms are in the following equations
Mn2Se7
(NH4)2SO4
Balance the following equations
N2 + H2 → NH3
H2 + O2 → H20
Today’s Standard:
MS-PS1-5 - Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.

21. Taking Care of Business
Tomorrow we are going to take a test on everything we have gone over since our last test.
Today we are going to review for the test

22. Unit 3 Date Assignment title Page # 09/27/16
Physical and Chemical Changes 1
09/28/16
Mystery Powder Investigation (3 Pages) 2
10/06/16
Reviewing It All 3
10/10/16
Chemical Equations 4
10/17/16
Massing Chemical Reactions Lab 5
10/18/16
Exothermic and Endothermic Reactions 6
10/19/16
Ice Cream Maker (4 pages) 7
10/21/16
Variables 8
10/31/16
Ice Cream Chemistry 9
11/3/16
Review for Unit 3 Test 10

23. Let’s review What does the law of conservation of mass state?
Matter is never created or destroyed
SO WHAT DOES THAT MEAN???
When a chemical reaction occurs the atoms move around, but the same amount of each atoms still exists.
Let’s look an example:
Explain in your notes how these pictures support the law of conservation of mass.

24. Let’s review how to count a molecules atoms
1. K2CO Na2CrO4
3. Pb(NO3) Al2(CO3)3

25. Are these equations balanced?
K + MgBr →KBr + Mg
HCl + CaCO3 → CaCl2 + H2O + CO2

26. Are these equations balanced?
P + O2 → P2O5
C3H O2 → CO H2O

27. Let’s review What does the law of conservation of energy state?
Energy may be converted from one form to another.
The total amount of energy in the universe is constant.

28. Plasma Gas Liquid Solid
Energy
Plasma
Ionization
Deionization
Gas
Condensation
Evaporation
/ Vaporization
Liquid
Sublimation
Melting
Freezing
Solid
Energy

29. ADD ENERGY Plasma Gas Liquid Solid Freezing Energy Ionization
Deionization
Gas
Condensation
ADD ENERGY
Evaporation
/ Vaporization
Liquid
Sublimation
Melting
Freezing
Solid
Energy

30. Plasma Gas Liquid Solid
Energy
Plasma
Ionization
Gas
Condensation
Evaporation
/ Vaporization
Liquid
Sublimation
Melting
Solid
Energy

31. TAKE ENERGY AWAY Plasma Gas Liquid Solid Energy Ionization
Condensation
Evaporation
/ Vaporization
Liquid
Sublimation
Melting
Solid
Energy

32. Energy
During chemical reactions the release or absorption of thermal energy can either break down or create bonds between atoms.

33. Exothermic heat energy EXITS the system
Surroundings usually feel warmer
Thermal energy is released

35. Examples of exothermic reactions
any combustion reaction
rusting of iron (rust steel wool with vinegar)
reaction between water and calcium chloride
dissolving laundry detergent in water
freezing water into ice cubes
snow forming inside clouds
respiration
nuclear fission

36. Endothermic heat energy ENTERS the system
surroundings usually feel cooler
Thermal energy is absorbed

39. Examples of endothermic reactions
melting ice cubes
cooking an egg
burning toast
mixing water and ammonium nitrate
photosynthesis

40. Systems
System
a group of interacting parts that work together to do a job or to form a whole.

41. Open System
Matter and energy can flow into and out of the system.

42. Closed System
Matter cannot enter or leave, however energy can.

43. Examples of open and closed systems
Open pot of boiling water
The human body
A car with an open window
Closed pot of boiling water
A watch
A closed car
Earth

44. Ice Cream lab
In our ice cream lab we had a ziploc bag with the milk mixture in it. When the milk mixture was in your ice cream making device was the milk mixture an open system or a closed system?
Closed
Why?
It was closed because thermal energy could be released but not matter should have left the bag.

45. Types of Variables
There are 2 main types of variables: Independent Variable: The variable that is changed by the scientist; the ‘I control’ variable Dependent Variable: What is being measured

46. Examples
If I drink Mountain Dew before bed, then I will not sleep very much. IV: Drinking Mountain Dew DV: the amount of sleep

47. Examples
If I leave all the lights on all day, then my electric bill will be expensive IV: ______________________ DV: ______________________

48. Examples
If I brush my cat more, then there will be less fur on my furniture IV: ______________________ DV: ______________________

49. Examples
Elizabeth wanted to test if temperature affected how fast milk goes bad and curdles. She left milk in a room temperature closet, a fridge, and a oven that was turned on low heat. She then measured how rotten the milk was after 10 days. IV: ____________________________________ DV: ____________________________________

50. Controlled Variables
Things that are kept constant (the same) by scientists
These allow for a fair test.

51. All experiments should have a control group.
Controlled Group
In a scientific experiment, the control is the group that serves as the standard of comparison.
The control group may be a “no treatment" or an “experimenter selected” group.
The control group is exposed to the same conditions as the experimental group, except for the variable being tested.
All experiments should have a control group.

52. Review Independent Variable What Gets Changed “WHAT I DO”
The results “DATA”
Control Variable
What stays the same
Control Group
Does NOT get changes

53. Examples
1. A study was done to find if different tire treads affect the braking distance of a car. I: _____________________D:____________________C: _______________________ 2. The time it takes to run a mile depends on the person’s running speed. 3. The height of bean plants depends on the amount of water they receive.

54. Ice cream Lab So why did we make ice cream????
By making ice cream we could see and taste a chemical reaction and have a better understanding how thermal energy can be released and stored.
While making ice cream we monitored the temperature, what did this show us?
We saw a transfer of thermal energy.

55. Ice cream Lab
After watching the videos and making our own ice cream maker, what did you notice about the design and the process? Did your device turn our perfect or are there things that you would do differently next time?

56. Closing
Study for your test tomorrow!!!

57. 5 Minute Check 11/04/16
What is the difference between an open and a closed system?
What is the difference between an exothermic and an endothermic reaction?
Today’s Standard:
MS-PS1-6 - Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.*

58. Taking care of business
Today we are taking a test in here from unit 3