11 20 What Are Conversion Factors Part Ii

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Launch: 11/19 Grab your binder and immediately take a seat! Take out your notes and prepare for the quiz! What are reactants, products, coefficients, subscripts? What is the principle of conservation of matter? Is 2C 2 H 6 + 7O 2 4CO 2 + 6H 2 O balanced? What is the coefficient for H 2 O when the below equation is balanced: __H 2 O __H 2 + __O 2 Warning: We will start the quiz without study time if the room gets too noisy!

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Transcript of 11 20 What Are Conversion Factors Part Ii

Page 1: 11 20 What Are Conversion Factors   Part Ii

Launch: 11/19   Grab your binder and immediately take a seat!

  Take out your notes and prepare for the quiz!   What are reactants, products, coefficients, subscripts?   What is the principle of conservation of matter?   Is 2C2H6 + 7O2 4CO2 + 6H2O balanced?

  What is the coefficient for H2O when the below equation is balanced: __H2O __H2 + __O2

  Warning: We will start the quiz without study time if the room gets too noisy!

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Quiz!   Good SAT behavior = up/down and no talking

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Announcements   Points end next week and the competition is getting

fierce   Be engaged   Be respectful

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What is a conversion factor? – Part II

Mr. Heffner 11/20/09

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How are conversion factors used?   There is a 3-step process:

1.  Identify the starting and ending units. 2.  Pick a conversion factor that has the starting units

on the bottom and the ending units on the top. 3.  Multiply out.

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Activity   Dimensional Analysis Cards

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Exit Slip 1.  Which of the following is a correct way to show the

conversion factor: 100 millimeter (mm) = 1 centimeter (cm)?

a. 

b. 

c. 

d. 

10 mm 1 cm

100 mm 1 cm 1 cm 1 mm

100 cm 1 mm

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Exit Slip 2.  Which of the following conversion factors would need

to be used to convert from seconds to minutes?

a. 

b. 

c. 

d. 

1 hour 60 minute

1 hour 60 minutes

1 minute 60 seconds 60 seconds

1 hour

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Exit Slip

3.  Using the above conversion factor, how many centimeters (cm) are there in 2 meters (m)?

a.  2 cm

b.  20 cm c.  50 cm

d.  200 cm

100 cm 1 m

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Exit Slip 60 minutes = 1 hour

4.  Using the above conversion factor, how many hours are there in 240 minutes?

a.  1 hour

b.  4 hours c.  24 hours

d.  60 hours

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Exit Slip 100 mm = 1 cm 100 cm = 1 m

5.  Using the above conversion factors, how many millimeters (mm) are there in 4 meters (m)?

a.  40 mm

b.  100 mm c.  400 mm

d.  4000 mm

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Homework   Finish practice question worksheet