inquiry : what is surface area and how can i change the surface area of an object?

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Inquiry : What is surface area and how can I change the surface area of an object? Instructions : Take out your: 1) lab sheet(the one that says “Score” on the top, 2) Graph (if you completed graph) & 3) completed lab checklist Make sure they are stapled in that order. Take out your binder.

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Inquiry : What is surface area and how can I change the surface area of an object? . Instructions : Take out your: 1) lab sheet(the one that says “Score” on the top, 2) Graph (if you completed graph) & 3) completed lab checklist Make sure they are stapled in that order. - PowerPoint PPT Presentation

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Page 1: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: What is surface area and how can I change the surface area of an object?

Instructions:Take out your: 1) lab sheet(the one that says “Score” on the

top, 2) Graph (if you completed graph) & 3) completed lab checklist

Make sure they are stapled in that order.Take out your binder.

Page 2: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: What is surface area and how can I change the surface area of an object?

Do Now: What is the area of this surface?Surface: the outside layer of something.

Area = base x height

6 cm.

6 cm.

Area = 6 cm. x 6 cm.

Area = 36 cm.2

Page 3: Inquiry : What is surface area and how can I change the surface area of an object?

How many surfaces does a cube have? 1

2

3

45

6

This shape has _______ surfaces.6

Inquiry: What is surface area and how can I change the surface area of an object?

Page 4: Inquiry : What is surface area and how can I change the surface area of an object?

Surface

Surface

Surface

Surface

Surface

Surface

Page 5: Inquiry : What is surface area and how can I change the surface area of an object?

Total surface area = the sum of the areas of each of the surfaces.

6 cm.

6 cm.

Number of surfaces = ______Total surface area:Area of surface 1: _________Area of surface 2: _________Area of surface 3: _________Area of surface 4: _________Area of surface 5: _________Area of surface 6: _________

Total: _________

6

216 cm.2

36 cm.2

36 cm.2

36 cm.2

36 cm.2

36 cm.2

36 cm.2

Page 6: Inquiry : What is surface area and how can I change the surface area of an object?

Our cube/block has 6 surfaces. Lets split our cube/block into 2 halves.

Now what is the total amount of surfaces for both halves?

6cm

6cm

6cm

6cm

6cm3cm

6cm

6cm

3cm

How many TOTAL surfaces?__________________12 (6 for each shape)Did cutting the block increase or decrease the TOTAL amount of surfaces? ________________________Increased from 6 to 12 surfaces.

Page 7: Inquiry : What is surface area and how can I change the surface area of an object?

Now what is the total surface area of both halves?

6 cm.

3 cm.

Number of surfaces = ____________Surface area of shape #1:

Area of surface 1: _________Area of surface 2: _________Area of surface 3: _________Area of surface 4: _________Area of surface 5: _________Area of surface 6: _________

Total: _________

6 cm.

36 cm.2

6 (for shape 1)

18 cm.2

18 cm.2

18 cm.2

18 cm.2

144 cm.2

Surface areaof shape #1: ___________

Surface areaof shape #2: + ___________

Total: ____________

144 cm.2

288 cm.2

36 cm.2

144 cm.2

144cm2 144cm2+

Page 8: Inquiry : What is surface area and how can I change the surface area of an object?

Let break our original cube into 6 pieces. How many TOTAL surfaces are there now?

6 surfaces 12 surfacesHow many total surfaces?_________________

As we break the block into more pieces the total number of surfaces ________________.increased

6 surf.

6 surf.

6 surf.

6 surf.

6 surf.

6 surf.

36 surfaces

6 surf.

6 surf.

Page 9: Inquiry : What is surface area and how can I change the surface area of an object?

Let break our original cube into 6 pieces. How many TOTAL surfaces are there now?

6 surfaces 12 surfaces

As we break the block into more pieces the total number of surfaces ________________.increased

6 surf.

6 surf.

6 surf.

6 surf.

6 surf.

6 surf.

36 surfaces

6 surf.

6 surf.

Page 10: Inquiry : What is surface area and how can I change the surface area of an object?

Now what’s the total surface area?

3 cm.6 cm.

2 cm.

Surface area of shape one:Number of surfaces = ______

Area of surface 1: _________Area of surface 2: _________Area of surface 3: _________Area of surface 4: _________Area of surface 5: _________Area of surface 6: _________

Total: _________

6

12 cm.2

12 cm.2

18 cm.2

18 cm.2

6 cm.2

6 cm.2

72 cm.2

Surface areaof shape #1: ___________

___________

Total: ____________

72 cm.2

432 cm.2

x 6 shapes

72cm2

72cm2

72cm2

72cm2

72cm2

72cm2

Page 11: Inquiry : What is surface area and how can I change the surface area of an object?

How did the surface area change?

Surface area: 216 cm2 Surface area: 288 cm2 Surface area: 432 cm2

As the we broke apart the cube, the number of surfaces _______________, and the total surface area_______________.

increased increased

Inquiry: What is surface area and how can I change the surface area of an object?

Page 12: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: What is surface area and how can I change the surface area of an object?

(increases or decreases)

General Rule:Breaking or crushing an object _________________

its surface area because ______________________.

increases

It exposes more surfaces

Page 13: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: What is surface area and how can I change the surface area of an object?

Task: You will plan and complete your own investigation answering the question:

How does changing the surface area of an antacid pill affect how fast it reacts with water?

This lab counts as a quiz grade!Investigation Plan = 25 points (25%)

Completed lab = 50 points (50 %)Written Summary = 25 points (25%)

Page 14: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: What are some different variables that affect digestion?

Record in your binder the following student observations about the digestive system (5 mins.)

- Digestion (breaking down of food) is a Chemical Change- Food travels from mouth esophagus stomachsmall intestines large intestines rectum anus

- The stomach is about the size of your fist and it is toward the upper left side of your abdomen.

- Chewing physically changes the surface area of food while enzymes (en-zeyemes) chemically changes food.

- The stomach moves/churnes while food is digesting.- Drinking warmer beverages helps digestion.

Page 15: Inquiry : What is surface area and how can I change the surface area of an object?

Task: This week you will choose to investigate one of the following questions:

1) How is the chemical reaction rate of an antacid pill affected by its surface area?

2) How is the chemical reaction rate of an antacid pill affected by stirring?

3) How is the chemical reaction rate of an antacid pill affected by temperature?

Research and organize some information about each variable:1) Read the section “Surface area and Chem. Changes/Reactions” use your notes and what you learned yesterday to fill in the blanks

(4 mins.)2) Read the section “Stirring area and Chem. Changes/Reactions and fill in the blank based on your prior knowledge (2mins.) 3) Read the section “Temp. area and Chem. Changes/Reactions” Observe the demo and fill in the blanks.

Inquiry: What are some different variables that affect digestion?

Page 16: Inquiry : What is surface area and how can I change the surface area of an object?

Task:

1) Choose a one of the three questions to investigate and write it down in your binder.

(some students may be assigned a question)You will be using an antacid pill and water to complete your

investigation

2) Complete the investigation plan on the back of your information sheet

3) Think about who you would like to work with (they must be investigating the SAME question. (Maximum of 3 per group)

Inquiry: What are some different variables that affect digestion?

Page 17: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how changing the surface area of an antacid pill affects how fast it reacts with water.

Do Now: Identify the independent var., dependent var. and constants for the following question.

“How does changing the amount of clothing a person has on affect how fast they run?”

Independent variable:Dependent variable:Constants:

The amount of clothing

How fast the person is runs

The track, the distance, the contestants

Page 18: Inquiry : What is surface area and how can I change the surface area of an object?

Journal Entry (5 mins)1) Place the antacid pill in the cup of water

2) Record your observations3) What are the reactants?4) What are the products?

L.T.: I can complete my individual and my group Investigation Plan.

Page 19: Inquiry : What is surface area and how can I change the surface area of an object?

L.T.: I can complete my individual and my group Investigation Plan.

Task: A group recorder sheet will be based around.

-Find the section with your class (701 and 702 in the front of the sheet, 703 on the back of the sheet)

-In the 1st column, write the names of your group members (you name only needs to be recorded ONCE).

-Check the box that states the variable that you will be investigating.

- I will confirm whether you may investigate the question you chose.

- Complete your individual Investigation Plan (on the back of yesterday’s worksheet).

- Once each member has completed an individual plan, you will receive a Group Investigation plan. Complete your group plan.

Page 20: Inquiry : What is surface area and how can I change the surface area of an object?

Task: This week you will choose to investigate one of the following questions:

1) How is the chemical reaction rate of an antacid pill affected by its surface area?

2) How is the chemical reaction rate of an antacid pill affected by stirring?

3) How is the chemical reaction rate of an antacid pill affected by temperature?

Research and organize some information about each variable:1) Read the section “Surface area and Chem. Changes/Reactions” use your notes and what you learned yesterday to fill in the blanks

(4 mins.)2) Read the section “Stirring area and Chem. Changes/Reactions and fill in the blank based on your prior knowledge (2mins.) 3) Read the section “Temp. area and Chem. Changes/Reactions” Observe the demo and fill in the blanks.

Inquiry: What are some different variables that affect digestion?

Page 21: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how changing the surface area of an antacid pill affects how fast it reacts with water.

Vs.

Page 22: Inquiry : What is surface area and how can I change the surface area of an object?

How did the surface area change?

Surface area: 216 cm2 Surface area: 288 cm2 Surface area: 432 cm2

As the number of surfaces _______________, the total surface area_______________.increased increased

L.T: I can investigate how changing the surface area of an antacid pill affects how fast it reacts with water.

How can I change the surface area of an antacid pill?

Page 23: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how changing the surface area of an antacid pill affects how fast it reacts with water.

Graduated Cylinder: used to measure volume of water

Meniscus: curved water line.

Measure water at the bottom of themeniscus

Page 24: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Task: You will plan and complete your own investigation answering the question:

How does changing the surface area of an antacid pill affect how fast it reacts with water?

This lab counts as a quiz grade!Investigation Plan = 25 points (25%)

Completed lab = 50 points (50 %)Written Summary = 25 points (25%)

Page 25: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Different variables that affect the rate (how fast) a chemical reaction happens:

We’ve investigated

Surface Area

Temperature

Stirring

Page 26: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Task: You will plan and complete your own investigation answering the question:

How does changing the surface area of an antacid pill affect how fast it reacts with water?

This lab counts as a quiz grade!Investigation Plan = 25 points (25%)

Completed lab = 50 points (50 %)Written Summary = 25 points (25%)

Page 27: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Task: 1) Complete investigation plan for the question: “How does temperature affect how fast an antacid pill reacts

with water?”

2) Complete investigation plan for the question: “How does stirring an antacid pill affect how fast it reacts

with water?”

Page 28: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Task: Edit your lab-Complete materials list

- Complete your full procedure- Create a data table

Page 29: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Task: Edit your lab-Complete your investigation

- Complete your graph- Complete your conclusion

Page 30: Inquiry : What is surface area and how can I change the surface area of an object?

L.T: I can investigate how temperature and stirring an antacid pill affects how fast it reacts with water.

Task: 1) Complete investigation plan for the question: “How does temperature affect how fast an antacid pill reacts

with water?”

2) Complete investigation plan for the question: “How does stirring an antacid pill affect how fast it reacts

with water?”

Page 31: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Task: You will plan and complete your own investigation answering the question:

How does changing the surface area of an antacid pill affect how fast it reacts with water?

This lab counts as a quiz grade!Investigation Plan = 25 points (25%)

Completed lab = 50 points (50 %)Written Summary = 25 points (25%)

Page 32: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Increasing the Surface area makes chemical reactions go faster by allowing more atoms to react with each other.

Vs.

Surface area and Chemical Reactions

Page 33: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Surface Area

Rea

ctio

n S

peed

0 1 2 3 4

Page 34: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Heat makes chemical reactions go faster because there is more energy helping to create and/or break chemical bonds

Vs.

Temperature and Chemical Reactions

Page 35: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Temperature

Rea

ctio

n S

peed

Page 36: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Stirring increases the speed of a chemical reaction by adding energy to help create and/or break bonds between atoms

Vs.

Stirring and Chemical Reactions

Page 37: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Stirring

Rea

ctio

n S

peed

Page 38: Inquiry : What is surface area and how can I change the surface area of an object?

Inquiry: How does surface area, temperature, and stirring affect reaction rates?

Exit Ticket: Read the article “Rate of digestion’ and answer

the questions.