Do Now When the bell rings After the bell (2 min) In your seat: With pen/pencil With Notebook With Handout Silent and ready for Do Now Silently think about and respond: Describe the perfect classroom environment Still needs Do Now

Agenda  Do Now (5 min) Warm Up (10 min) Notes: Dimensional Analysis and Moles (30 min) Independent Practice (15 min) Event: Javelin Throw (20 min) Exit Slip Closeout (2 min)  Agenda

Stoichiometry: Day #2 Objectives: 1. Utilize dimensional analysis to convert between moles and mass

Guiding Question Give a real-life example of using dimensional analysis

Announce-ments Quarter 2 Ends Thursday Last day to make-up missing work is Tomorrow Last day to make-up Unit 4 test is Tomorrow Winter Packets have been entered Announce-ments

Warm Up LiF K2S CN- Zinc (II) Chloride Nitrogen Trifluoride What is the percent composition of Zinc in Zinc (II) Chloride? Warm Up Calculate the molar mass or percent composition for the following questions

Note taking C: No conversation unless asking/answering a question when called on, or minding manners H: Raise hand, keep taking notes, wait to be called on A: Taking notes on handout, answering Check for Understanding questions, as directed M: None, no bathroom/water breaks P: No phones or headphones, head up, focused on teacher and notes, actively copying down notes, discussing CFU questions (when directed)

Vocabulary & Definition Conversion Factor: a ratio used to express the same value or quantity in two different units

KP #1: Dimensional Analysis What it is: the problem solving method we will use to convert one unit of measurement to another Example: Convert inches to feet To change from one unit to another we will use a conversion factor: Examples: 1 min = 60 sec 1 ft = 12 in KP #1: Dimensional Analysis

Turn and Discuss: The Ed White junior class decides to hold a bake sale to raise money for prom next year. If they need 5 dozen cookies to raise enough money, how many cookies do they need to make? KP #2: Using D.A.

You used dimensional analysis to find the answer… and probably didn’t even know it! 5 Dozen Cookies 12 X 60 Cookies 1 Dozen This is a conversion factor!

1. Draw a box 2. Put what you are given on the top left 3 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide KP #2: Using D.A.

How many seconds are in 45 minutes? Example #1 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide 45 x 60 = 2700 seconds

C.F.U. #1 & #2 How many seconds are in 9 minutes? How many hours are in 6 days? C.F.U. #1 & #2 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide

KP #3: Moles What it is: A unit of measurement in chemistry Tells you how much of something you have 1 Mole = Molar Mass KP #3: Moles This is the conversion factor we will use

Example #1 How many grams are in 3.6 moles of Iron? KP #4: Apply D.A. to moles 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide 3.6 x 56 = 201.6 g

C.F.U. #3 How many grams are in 4 moles of Sulfur? 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide

Example #2 How many moles are in 17 grams of Calcium Selenide? KP #4: Apply D.A. to moles 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide

C.F.U. #4 How many moles are in 36 grams of Water? 1. Draw a box 2. Put what you are given on the top left 3. Find the conversion factor and cancel units 4. Multiply across and then divide

Event: Javelin Throw Answer all questions on the handout Complete the 6 questions in 10 minutes to earn up to 3 throws Earn points with each throw Team with the most points earns extra credit

Independent Practice How What 15 minutes C: 0 – 1, only on task conversation H: Raise hand, move on to next question until I am available A: Completing questions M: In clusters. 3 Hall passes. P: Answering questions on the handout, using notes 15 minutes Complete practice on back-side of notes

Exit Slip How? What? (5 min) C – No talking H – Raise hand A – Taking exit slip M – In seat P – Completing exit slip without notes and turning in If you finish early, summarize what you learned at the bottom of your notes OR answer today’s guiding question