Download Stoichiometry Week 2

SHS Chemistry
2015-2016
Learning Target
I will convert between moles, particles, and grams
Warm-up
How many atoms are in 0.25 moles of silver (Ag)?
What is the mass of 0.25 moles of silver (Ag)?
IP#3 DUE WEDNESDAY
QUIZ #2 is THURSDAY

On a clean sheet of paper perform the following
calculations:
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Percent of water lost
Molar mass of water
Moles of water lost
Molecules of water lost
Write the conclusion.
 Bullet 3: actual mass of water is
14%
Check data with another
 Bullet 4: Add how you would
group if you feel like your
change or improve the procedure data is not accurate
BUBBLE GUM LAB

Finish all calculations.

Be sure you show your
work and circle all final
answers.
POPCORN LAB

On a clean sheet of paper perform
the following calculations:
 Percent of water lost
 Molar mass of water
 Moles of water lost
 Molecules of water lost
Check data with another
group if you feel like your
data is not accurate

Write the conclusion.
 Bullet 1: field corn= corn sitting in a field
 Bullet 3: actual mass of water is 14%
 Bullet 4: Add how you would change or
improve the procedure
Using the below compounds, create your own conversion
problems for another table to solve. Remember, you can
convert between moles, particles, and grams, but be
careful with your units!
 NaBr
 (NH4)2S
 PbSO4
 Fe3(PO4)2
 Ca(OH)2
 Na3PO4
 (NH4)2CO3
 C6H12O6
 Zn(C2H3O2)2
 AgF

Round 1: Clockwise
 Seat A: Molar Mass / Seat B: Molar Mass Conversion / Seat C:
Percent Composition Seat D: Percent Composition

Round 2: Counterclockwise
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
Round 3: (7  5) (5 3) (31) (16) (24) (47)
(62)


Seat A: Percent Composition / Seat B: Molar Mass / Seat C: Molar
Mass Conversion Seat D: Percent Composition
Seat A: Percent Composition/ Seat B: Percent Composition / Seat
C: Molar Mass Seat D: Molar Mass Conversion
Round 4: Backwards from previous
 Seat A: Molar Mass Conversion/ Seat B: Percent Composition
/ Seat C: Percent Composition Seat D: Molar Mass
Learning Target
I will use multiple unit factors to convert
between grams and particles
Warm Up
Calculate the number of molecules present in
353 grams of carbon tetrachloride. Show your
work including all units.


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You will be weighing substances and
subtracting the mass of the container to
determine the mass of the substances
themselves.
You will need a calculator, something to write
with, your moles islands, and a periodic table.
Mass of Plastic Bottle: 9.4 grams
Mass of Slender Glass Bottle: 39.1 grams
Mass of Squarish Glass Bottle: 46.2 grams
Learning Target
Continue Mass / Mole/ Particle Conversions
Warm Up
Independent Practice #2 is due today!
Quiz #2 Friday!
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Combustion Reaction

1CH4 + 2O2  1CO2 + 2H2O
Write a problem to trade with your partner
that involves converting between mass,
moles, or particles (or all three). (2 minutes)
 Write the solution to your problem, including
all the steps for solving it.

(2 minutes)

Trade and solve your partner’s problem.
(3 minutes)

Compare your methods for problem solving
(1 minute)
Learning Target
Converting between mass and moles and
particles
Warm Up
Check the independent practice KEY to make
sure your answers are correct
 You have today to prepare for
tomorrow’s quiz!
 Review your independent practice
 Work on the Mass-Mole-Particle
handout.
 Check your answers with the key to make
sure you are on the right track
Learning Target
I can determine the proper conversion factors
to use and can convert between mass and
particles of a single substance.
Warm Up
Prepare for quiz!
You will need a periodic table and a calculator

Balance this equation:
__Na + __CuCl2 -> __Cu + __NaCl
2Na + CuCl2 -> Cu + 2NaCl

If 256 grams of Copper (II) Chloride were
reacted, how many particles were reacted?

If 3.5 x 1024 particles of NaCl were produced,
how many grams of NaCl were produced?

If 5.3 x 1014 particles of Na were reacted, how
many moles of Na were reacted?
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Take your time and show ALL YOUR WORK
Take your time!

Did you…
 Show all your work?
 Label every number with units and chemical
formula?
 Cancel units?
 Provide a final answer with units and chemical
formula?
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Due Tuesday 3/28
Quiz 3 Wednesday 3/29