Low budget manipulatives to improve teaching stoichiometry
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-. H. H. N. H. H. Cl. Cl. Cl. C. Cl. Low Budget Manipulatives to Improve Teaching Stoichiometry. A man was out walking in the desert when a voice said to him, "Pick up some pebbles and put them in your pocket, and tomorrow you will be both happy and sad."

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Low Budget Manipulatives to Improve Teaching Stoichiometry

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H

H

N

H

H

Cl

Cl

Cl

C

Cl

Low Budget Manipulatives

to

Improve Teaching

Stoichiometry


A man was out walking in the desert when a voice said to him, "Pick up some pebbles and put them in your pocket, and tomorrow you will be both happy and sad."

The man obeyed. He stooped down and picked up a handful of pebbles and put them in his pocket. The next morning he reached into his pocket and found diamonds, sapphires, rubies and emeralds.

And he was both happy and sad.

Happy he had taken some - sad that he hadn't taken more.


Anthony Fernandes

La Salle High School (Pasadena)

25 Years Education

Biology, Chemistry (All Levels), Genetics

Certified in Biotechnology

[email protected]

626.696.4337

B


A

Brian Miller

La Salle High School (Pasadena)

29 Years Education

Biology, Chemistry (All Levels), Environmental Science,

Anatomy, Physics

Smart Notebook Trainer

smarterteacher.blogspot.com

[email protected]

626.696.4349


Name email School City

B

Housekeeping

Sign In Sheet

Cell Phones

Bathroom Breaks

Ask Questions


A

Difficulties in Teaching Stoichiometry

Resistance

Math

Conversions

Fractions

Nomenclature

Reading the Problem


HOW TO SOLVE A PROBLEM

Step I. Understand the Problem

(Put Your Pencil Down)

Collect Relevant Data

Read the Question

What You Have (Knowns)

What You Want (Unknowns)

Step II. Choose an Appropriate Strategy

Act It Out

Choose an Operation

Draw a Picture

Guess and Check

Look for a Pattern

Make a Chart or Table

Make an Organized List

Use Logical Reasoning

Work Backwards

Rafe Esquith

Teach Like Your Hair is On Fire

Step III. Solve The Problem

(Pick Up Your Pencil)

Step IV. Analyze Your Result

Does My Answer Make Sense?


Our Classroom

The 3 C's: Critical Thinking,

Communication, Collaboration

White Boards

Home Depot

Size & Space

Presentation

Encourages Collaboration

Creates Focus

Manipulatives

Printer Overstocks

B


A

Pre - Stoichiometry

Periodic Table

Know Your Ions

Memorize or Not to Memorize

Ion Cards

The Mole Triangle


Stoichiometry

Pre-Supposes Balancing Equations,

Chemical Reactions and Calculating Molar Mass

Introducing Stoichiometry

Utilize One Basic Balanced Equation

Ammonia N2 + 3H2 ---> 2NH3

Rust4Fe + 3O2 ---> 2Fe2O3

Simple Equation

Varied Coefficients

Work all Aspects

B


Synthesis

A + B  AB

Decomposition

AB  A + B


Single Replacement

AB + CD  AD + B

Double Replacement

AB + CD  AD + CB


Fe2O3

4

Fe

+

3

O2

2

N2

+

3

H2

2

NH3


Fe2O3

4

Fe

+

3

O2

2

What is the mole ratio for each of the following:

Fe : O2

Fe : Fe2O3

O2 : Fe2O3


A

Fe2O3

4

Fe

+

3

O2

2

How many grams of rust (Fe2O3) can be produced from the complete corrosion of 15 grams of iron?

Step 1:

Read the Question and Confirm

Equation is Balanced

Step 2:

Highlight Start (have) in Green and

Stop in Red (want).


Fe2O3

4

Fe

+

3

O2

2

B

How many grams of rust (Fe2O3) can be produced from the complete oxidation of 15 grams of iron?

15 g Fe

? g Fe2O3

Step 3:

Use Stoichiometry Pieces to Create Roadmap


Fe2O3

4

Fe

+

3

O2

2

moles of

want

g.f.m. of

given

g.f.m. of

want

__moles

of given

grams of

want

moles of

given

__ grams of

given

1 mole

of given

1 mole of

want

How many grams of rust (Fe2O3) can be produced from the complete oxidation of 15 grams of iron?

? g Fe2O3

15 g Fe


grams of

given

grams of

want

1 mole

of given

moles of

want

g.f.m. of

want

g.f.m. of

given

moles of

given

1 mole of

want

GRAMS

MOLES

MOLES

GRAMS

moles of want

from balanced

equation

gram formula mass

of want

1 mole of given

grams of want

grams of

given

x

x

x

=

gram formula mass

of given

moles of given

from balanced

equation

1 mole of want


Fe2O3

4

Fe

+

3

O2

2

A

How many grams of rust (Fe2O3) can be produced from the complete oxidation of 15 grams of iron?

15 g Fe

? g Fe2O3

Step 4:

Solve Problem Using White Boards

Step 5:

Compare, Correct and/or Present Work on White Boards.


B

It is absolutely FREE!!!


N2

+

3

H2

2

NH3

A

How many grams Hydrogen are necessary to produce 0.75 moles of ammonia (NH3)?


grams of

given

grams of

want

1 mole

of given

moles of

want

g.f.m. of

want

g.f.m. of

given

moles of

given

1 mole of

want

GRAMS

MOLES

MOLES

GRAMS

moles of want

from balanced

equation

gram formula mass

of want

1 mole of given

grams of want

grams of

given

x

x

x

=

gram formula mass

of given

moles of given

from balanced

equation

1 mole of want


N2

+

3

H2

2

NH3

1 mole of

want

grams of

want

__ grams of

given

moles of

want

1 mole

of given

moles of

given

g.f.m. of

given

__moles

of given

g.f.m. of

want


N2

+

3

H2

2

NH3

How many moles of Hydrogen are necessary to produce 2.5 grams of ammonia (NH3)?

B


grams of

given

grams of

want

1 mole

of given

moles of

want

g.f.m. of

want

g.f.m. of

given

moles of

given

1 mole of

want

GRAMS

MOLES

MOLES

GRAMS

moles of want

from balanced

equation

gram formula mass

of want

1 mole of given

grams of want

grams of

given

x

x

x

=

gram formula mass

of given

moles of given

from balanced

equation

1 mole of want


N2

+

g.f.m. of

want

1 mole

of given

__ grams of

given

3

H2

2

NH3

__moles

of given

1 mole of

want

moles of

given

grams of

want

moles of

want

g.f.m. of

given


Your

Turn


Fe2O3

4

Fe

+

3

O2

2

What volume of oxygen is necessary to produce 1.5 grams of rust when an excess of iron is present?


Suggestions

Student Created Problems

What do you suggest???


WPAs


Professional Development Workshops

by SMARTERTEACHER

SMART Boards and SMART Notebook in the Classroom

SMART Response in the Classroom

Effective Teaching Strategies for the Block Schedule

Teaching the Three C's:

Critical Thinking, Communication and Collaboration

Multiple Intelligences in the Science Classroom

Teaching to Both Sides of the Brain

[email protected]

smarterteacher.blogspot.com


Attachments

Stoichiometry Moles to Grams.wmv

Stoichiometry Grams to Grams.wmv


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