1/30/2012 Standards: 3
My Website - www.MrWiggerSci.com/chem
Objectives:
1. be able to recognize 6.02 x 1023 = mole = Avogadro's Number
2. be able to convert from representative particles <----> moles
DO NOW:
1. Write 1 paragraph (5-10 sentences) on a separate sheet of paper, not on
your whiteboard. (5 pts) MISC (turn in to basket when completed)
REFLECTION Subject: What do you plan to do different this semester
than you did last semester? This should be something(s) that will allow
you to improve your grade and/or perform well on the CST test.
HOMEWORK:
1. Ch 11.1, PP's p. 311 1-3 AND
App A, p. 876, Ch 11.1 1-4
(5 pts) Std 3
==========================================================
STAMPS: Journal - none
1. SN Ch 11.1 p. 137-140 (5 pts) Std 3
Notebook - To Keep
All of MISC
Stamp sec - 3 prints
Print a new Notebook Total Sheet
Representative particles can be atoms
or molecules (aka formula units)
Page 310
1 doz = 12
1 doz eggs = 12 eggs
1 gross = 144
1 gross eggs = 144 eggs
1 mol = 6.02 x 1023
1 mol Na atoms = 6.02 x 1023 Na atoms
1 mol NaCl = 6.02 x 1023 NaCl molecules
Representative Particles:
molecules - example NaCl
atoms - example Ti or N or Al
A mole is just a number:
6.02 x 1023
·If 1 mol Al atoms = 6.02 x 1023 Al atoms, How many atoms are
in 3.5 mol of Al ?
If you have 4.6 mol B,
how many B atoms?
1/31/2012 Standards: 3 (Stoichiometry)
Objectives:
Via Video at home
a. be able to convert from moles <----> representative particles
b. be able to divide or multiply powers of 10 and change to Scientific Notation
(pen method)
Video In Class
Students will have opportunity to change their lives for the better!
DO NOW:
1. Answer questions on handout "Gifted Hands..." as you are watching the video.
(5 pts) Std MISC
HOMEWORK:
1. Mole <---> representative particle Conversion Practice - Tutorial 1st 5
questions only (3 pts) Std 3
2. Ch 11.1, PP's, p. 312 4 (a-d) (2 pts) Std 3
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STAMPS:
Journal 1/30
1. Stamp: Ch 11.1, PP's p. 311 1-3 (5 pts total for both) Std 3
App A, p. 876, Ch 11.1 1-4
1. Given 5.5 mole CoCl2 how many formula units are there?
2. Given 4.4 x 1025 atoms Cl, how many moles are there?
Give this lesson on video!
Show Gifted Hands w Cuba Gooding, Jr. What makes learning fun and enjoyable? How do you make you mark in the world.
When you are dead - how many will come to your funeral and why? I'll tell you - those who you have had a positive influence on.
How will you be remembered. Pray like there is no tomorrow and live as if you will survive to be 100 yrs old (Ben Franklin)
RESPONDERS TODAY
2/1/2012 Standards: 3 (stoichiometry)
Objectives:
● be able to calculate molar mass for elements (atoms) and use it to calculate
mole <----> grams for elements (atoms)
DO NOW:
1. How many grams are in 1 mole of: Pd Mg Ne Y
2. Given 2.3 mol Pd, find # grams
3. Given 8.8 g of Mg, find # moles Mg
HOMEWORK:
1. Ch 11.2, PP's p. 316 11 (a-d), 12 (a-d)
2. App A, p. 876, Ch 11.2 5-10
(5 pts) Std 3
=========================================================
STAMPS:
Journal 1/30 & 1/31
1. Mole <----> representative particle Conversion Practice - Tutorial (Wksht)
(3 pts) Std 3
2. Ch 11.1, PP's, p. 312 4 (a-d) (2 pts) Std 3
ANNOUNCEMENT:
See tonight’s homework page to get answers to yesterday’s worksheet.
Follow-up to yesterday's video
Gifted Hands - The Ben Carson Story
Carson is labeled stupid,
but mom says he can do anything he wants.
Mom cuts TV two programs/week
Mom makes he & bro. read and write reports on
2 books weekly
get involved in learning and
living!!!!!!!!!!!!!!!
Molar mass = mass of one mole
Molar mass of an element (one mole of its atoms)
Find its mass on periodic chart.
Molar mass of a compound (one mole of its molecules)
Find mass of all of its individual atoms and add them up
Molar mass = mass of one mole
Molar mass of an element (one mole of its atoms)
Find its mass on periodic chart.
Examples
(give your answer without decimals, round):
Rb #37
Bi #83
N #7
Mg #12
1
Answer?
Molar mass = mass of one mole
Molar mass of a compound (one mole of its molecules)
Find mass of all of its individual atoms and add them up
Examples
(give your answer without decimals, round):
KMnO4
O2
Al2O3
FeO
2
Answer?
3
The given for your problem
is _______ . What is the find?
A
mol
B
representative
particle
3 mol FeO
4 mol Al2O3
2
Ca
8 Ge
Example 1:
Given
Find
2.3 g Be
1 mole Be = 9.0 g Be
(from mass in
Periodic Chart)
How many mol Be does this represent?
Solution:
WHAT?
2.3 g Be
1 mol Be
x
1
9 g Be
=
Example 2:
Given
Find
0.36 mol Na
1 mole Na = 23 g Na
(from mass in
Periodic Chart)
How many grams Na does this represent?
Solution:
WHAT?
0.36 mol Na
1
23 g Na
x
=
1 mol Na
ans = 8.3 g Na
4
Calculate the answer:
Given
Find
23 g Be
2.6 mol F2
72
g SO2
RESPONDERS TODAY
2/2/2012 Standards: 3 (stoichiometry)
Objectives:
● be able to calculate molar mass and use it to calculate
molecules <----> mole <----> grams for compounds (molecules)
● students will understand how to use 4-beam balance and use it in tomorrow's
lab
DO NOW:
1. Given 6.2 mol N2 how many grams does this represent?
2. 174 g N2 how many moles does this represent?
HOMEWORK:
1. Ch 11.2 PP's, p. 318 13 (a-e) & 14 (a-e) and
App. A, p. 876 11-14 (5 pts) Std 3
2. Print Mole Lab Sheet for Friday's lab (tomorrow) (1 pts) Std 3
3. Answers to Wed HW problems. Check these out to see how you did,
link on tonight’s HW page.
4. Watch videos on 4-beam balance (Columbia College & mine) in lesson plan)
==========================================================
STAMPS:
Journal 2/1
1. Ch 11.2, PP's p. 316 11 (a-d), 12 (a-d)
App A, p. 876, Ch 11.2 5-10
(5 pts) Std 3
How to read a 4-beam balance
(Columbia College)
Review part 1 - conversions of
RP's <---> mol <---> grams
Review part 2 - conversions of
RP's <---> mol <---> grams
http://www.yo
utube.com/wa
tch?v=cCw9xdpUIA&featur
e=related
http://www.y
outube.com
/owigger#p/
a/u/0/c7y_l
Q_ytsE
http://www.
youtube.co
m/watch?v
=rUD4wU1
EXyw
g <------> mol <------> particles
See page 319 in textbook
64 grams C
5
The given for your problem
is _______ . What is the find?
Only consider one step.
4 mol Al2O3
28 grams Cl2
2 Ca
A
mass (grams)
3 mol FeO
B
4 mol Al2O3
moles
2
Ca
5 x 1024 Ge
28 grams Cl2
C
representative particles
D
representative particles
or mass (grams)
64 grams C
5 x 1024 Ge
3 mol FeO
mol
6
If I give you ________ and ask
you to find _________,
what do
RP
you have to calculate first?
A
representative particle
B
mol
C
mass (grams)
mass
1 st
mol --> mass
mass --> mol
RP --> mol
mol --> RP
2 nd
RP --> mass
mass --> RP
mass
RP
7
What do we do next?
A
calculate moles
B
calculate grams
C
calculate representative
particles
D
Don't calculate anything,
you are done!
2/3/2012 Standards: 3
COPY FROM WEBSITE
Objectives:
● Mole Lab - take all measurements in class as quickly as possible &
turn in on Monday with all questions answered and chart completed.
DO NOW:
1. Read your lab sheet SILENTLY
HOMEWORK:
1. Print Atoms <---> Moles <---> Grams Tutorial summarizes conversions
involving moles, includes both atoms and molecules in calculations (see print
icon) (1 pt) Std 3
2. Mole lab - complete all calculations and answer all questions, due Monday
(15 pts) Std 3
3. NOTEBOOKS WILL BE COLLECTED STARTING WEDNESDAY 2/8
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STAMPS:
Molar Mass Lab sheet (data page only)
BASKET:
Ch 11.2 PP's, p. 318 13 (a-e) & 14 (a-e) and App. A, p. 876 11-14
(5 pts) Std 3