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Intro to Reactions Week 24 Chemistry

Week 24 Chemistry

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Week 24 Chemistry. Intro to Reactions. Write the Learning Target. Warm Up: 4 Minutes. Stay in your own seat. You should be working SILENTLY. Complete the Warm Up on the half sheet of paper you got at the door. Write the formulas for each of the following compounds: Sodium Phosphate - PowerPoint PPT Presentation

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Page 1: Week 24 Chemistry

Intro to ReactionsWeek 24 Chemistry

Page 2: Week 24 Chemistry

Warm Up: 4 Minutes

You should be working SILENTLY

Stay in your own seat

Complete the Warm Up on the half sheet of paper you got at the doorWrite the formulas for each of the following compounds: 

Sodium Phosphate

Cadmium (II) Chloride

Hypochlorous Acid

Write the Learning Target

Page 3: Week 24 Chemistry

Agenda Warm Up [7 minutes] Notes/Examples [17 minutes] Guided Practice [12 minutes] Independent Practice [13 minutes] Closing [4 Minutes]

Page 4: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Page 5: Week 24 Chemistry

Synthesis(Combination)

Page 6: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis

Page 7: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

Page 8: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Page 9: Week 24 Chemistry

Decomposition

Page 10: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Decomposition

Page 11: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

Page 12: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Page 13: Week 24 Chemistry

Single Replacement

Page 14: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement

Page 15: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more

complicated product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/

another element in a compound

Page 16: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more

complicated product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/

another element in a compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Page 17: Week 24 Chemistry

Double Replacement

Page 18: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more

complicated product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/

another element in a compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Double Replacement

Page 19: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more

complicated product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/

another element in a compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Double Replacement

Two elements switch places in

the reactants

Page 20: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more

complicated product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart

to form 2 simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/ another

element in a compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Double Replacement

Two elements switch places in

the reactants

AB + CD AD + CBNa(NO3) + KCl NaCl + K(NO3)

Page 21: Week 24 Chemistry

Combustion

Page 22: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart

to form 2 simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/ another

element in a compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Double Replacement Two elements switch places in the reactants

AB + CD AD + CBNa(NO3) + KCl NaCl +

K(NO3)

Combustion

Page 23: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more complicated

product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/ another element in a

compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Double Replacement Two elements switch places in the reactants

AB + CD AD + CBNa(NO3) + KCl NaCl +

K(NO3)

Combustion Oxygen combines with a carbon

compound to form water and carbon

dioxide, CO2

Page 24: Week 24 Chemistry

Types of Reactions Definition General Equation (Example)

Synthesis Two compounds combine to form a more

complicated product.

A + B AB8Fe + S8 8 FeS

Decomposition A complicated molecule breaks apart to form 2

simpler compounds

AB A + B2 H2O 2 H2 + O2

Single Replacement One element trades places w/ another

element in a compound

A + BC B + AC

Zn + Ag(NO3) 2 Ag + Zn(NO3)2

Double Replacement Two elements switch places in the reactants

AB + CD AD + CBNa(NO3) + KCl NaCl + K(NO3)

Combustion Oxygen combines with a

carbon compound to

form water and carbon dioxide,

CO2

CB + O2 CO2 + H2O

Page 25: Week 24 Chemistry

Match the reactions represented in the figure with the following choices.

1. Decomposition Reactions2. Synthesis Reactions3. Double Replacement

Reaction4. Single Replacement

Reactions

A.

B.

C.

D.

Check Point

Page 26: Week 24 Chemistry

Guided Practice Teacher:

1. Will show the problem on the board Students:

1. Take 16 seconds to analyze the picture equation

2. Take 29 seconds to match the picture equation with the appropriate chemical reaction with your shoulder partner

3. Be ready to share when Mr. Ghosh says SWAG

Page 27: Week 24 Chemistry

Guided Practice #1

A.C + O2 CO2

B.MgCl2 Mg + Cl2Synthesis

Page 28: Week 24 Chemistry

Guided Practice #2

A.4 Al + 3 O2 2 Al2CO3

B.2 H2O 2 H2 + O2

Decomposition

Page 29: Week 24 Chemistry

Guided Practice #3

A.Zn + 2 HCl ZnCl2 + H2

B.2 Li + Cl2 2 LiCl

Single Replacement

Page 30: Week 24 Chemistry

Guided Practice #4

A.Zn + 2 HCl ZnCl2 + H2

B.AgNO3 + NaCl AgCl + NaNO3

Double Replacement

Page 31: Week 24 Chemistry

Guided Practice #5

A.CH4 + 2 O2 CO2 + 2 H2OB.2 KBr + BaI2 2 KI + BaBr2

Combustion

+ O2

Page 32: Week 24 Chemistry

Independent Practice

Take some time to practice balancing and classifying the following equations

Practice makes Perfect

85%

Page 33: Week 24 Chemistry

Closing What are the different types of chemical

reactions?

What type of reaction does the following equation represent?

AB + CD AD + CB

Page 34: Week 24 Chemistry

Warm Up: 4 Minutes

You should be working SILENTLY

Stay in your own seat

Complete the Warm Up on the half sheet of paper you got at the doorClassify and balance the following reaction: 

___ZnCl2 + ___AgNO3 ___Zn(NO3)2 + ___AgCl

Write the Learning Target

Page 35: Week 24 Chemistry

Agenda Warm Up [7 minutes] Notes/Examples [15 minutes] Guided Practice [12 minutes] Independent Practice [15 minutes] Closing [4 Minutes]

Page 36: Week 24 Chemistry

How do we write equations?

C10H16 + 16 Cl 10 C + 16 HCl

Page 37: Week 24 Chemistry

Step 1: Write out formulas for all compounds in the reaction..

Solid zinc reacts with Hydrochloric Acid to form Zinc (II) Chloride and Hydrogen gas

To Write Chemical Reactions...

Page 38: Week 24 Chemistry

Important!!Some elements are diatomic (come in pairs):

Hydrogen

Iodine Bromine ChlorineNitrogen

Oxygen FluorineH2

I2 Br2 Cl2

F2O2

N2

I Never Bring Classwork Home On Fridays

Page 39: Week 24 Chemistry

Solid zinc reacts with Hydrochloric Acid to form Zinc (II) Chloride and Hydrogen gas

To Write Chemical Reactions...

Step 3: Balance the equationStep 2: Use key words to determine which compounds are reactants (left side) and which are products (right side)

Page 40: Week 24 Chemistry

Example 2:Iron + Water Iron (III) Oxide + Hydrogen

Page 41: Week 24 Chemistry

Example 3:When lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate and water are formed.

Page 42: Week 24 Chemistry

Guided Practice Teacher:

1. Will show the problem on the board Students:

1. Take 31 seconds to write out the compounds in the reaction

2. Take 59 seconds to write, balance, and classify the chemical reaction

3. Be ready to share when Mr. Ghosh says SWAG

Page 43: Week 24 Chemistry

Guided Practice #1Sodium Sulfate + Zinc (II) Hydroxide Sodium Hydroxide + Zinc (II) Sulfate

Na2SO4 + Zn(OH)2 2 NaOH + ZnSO4

Double Replacement

Page 44: Week 24 Chemistry

Guided Practice #2

If a copper coil is placed into a solution of silver (I) nitrate, silver crystals and copper (I) nitrate are formed.

Cu + AgNO3 Ag + CuNO3Single Replacement

Page 45: Week 24 Chemistry

Guided Practice #3

When propane (C3H8) is burned in oxygen gas, carbon dioxide and water are produced.

C3H8 + 5 O2 3 CO2 + 4 H2OCombustion

Page 46: Week 24 Chemistry

Guided Practice #4

When solid magnesium ribbon is burned, it combines with oxygen gas in the air to form magnesium oxide.

2 Mg + O2 2 MgOSynthesis

Page 47: Week 24 Chemistry

Independent Practice

Take some time to practice writing the following equations

Practice makes Perfect

85%

Page 48: Week 24 Chemistry

Closing What are the steps in writing a chemical

reaction?

Page 49: Week 24 Chemistry

Warm Up: 4 Minutes

You should be working SILENTLY

Stay in your own seatWrite the

Learning Target

Finish #1 from the Pre-lab on the Lab Handout

When zinc metal is dropped into Nitric Acid (HNO3), the reaction produces zinc (II) nitrate and hydrogen gas.

Page 50: Week 24 Chemistry

Agenda Warm Up [7 minutes] Lab Purpose/Expectations [4 minutes] Pre-Lab [6 minutes] Types of Reactions Lab [34 minutes] Closing [2 Minutes]

Page 51: Week 24 Chemistry

Recap of the Types of Chemical Reactions?

1. Two or more compounds combine to form a more complicated compound:

2. A complicated compound divides into two or more simpler compounds:

3. An element trades places with another element in a compound:

4. Two components switch places in the reactants:

5. Oxygen combines with a carbon compound to form carbon dioxide and water:

Synthesis

Decomposition

Single Replacement

Double Replacement

Combustion

Page 52: Week 24 Chemistry

Laboratory Purpose

To see examples of different types of reactions

Page 53: Week 24 Chemistry

Pre-Lab

Take 5:26 minutes to complete the remaining pre-lab questions

Page 54: Week 24 Chemistry

Pre-Lab #1When zinc metal is dropped into Nitric Acid (HNO3), the reaction produces zinc (II) nitrate and hydrogen gas

Zn + 2 HNO3 Zn(NO3)2 + H2Single Replacement

Page 55: Week 24 Chemistry

Pre-Lab #2When calcium oxide is combined with water, calcium hydroxide is formed.

CaO + H2O Ca(OH)2Synthesis

Page 56: Week 24 Chemistry

Pre-Lab #3Sodium phosphate and copper (II) sulfate react to form sodium sulfate and copper (II) phosphate

2 Na3PO4 + 3 CuSO4 3 Na2SO4 + Cu3(PO4)2

Double Replacement

Page 57: Week 24 Chemistry

Lab (please use headphones for the sound)Go to: tinyurl.com/typesofreactions

1. Complete the tutorial first2. Complete each of the chemical reactions in

the lab as directed on your lab handout You may choose 2 of the Single Replacement

and 3 of the Double Replacement reactions to complete in lab

Finish the rest if you have time remaining

Page 58: Week 24 Chemistry

Closing

Let’s see the Synthesis reaction from the lab!!

Mg + O2 MgOHomework

Finish all the questions in the lab handout

Page 59: Week 24 Chemistry

Warm Up: 4 Minutes

You should be working SILENTLY

Stay in your own seat

a) Balance the following equation:

___BaCl2 + ___(NH4)3PO4 ___Ba3(PO4)2 + ___NH4Cl

b) Classify the reaction

Write the Learning Target

Page 60: Week 24 Chemistry

Agenda Warm Up [7 minutes] Notes/Examples [15 minutes] Guided Practice [12 minutes] Independent Practice [15 minutes] Closing [4 Minutes]

Page 61: Week 24 Chemistry

What is Stoichiometry???

Calculations of quantities in chemical reactions.

Page 62: Week 24 Chemistry

Today’s Stoichiometric focus

Mole to Mole

Page 63: Week 24 Chemistry

Guaranteed method for success

How to Perform Stoichiometry Mole to Mole problems?

1. WRITE and BALANCE the equation

2. Write down GIVEN number AND unit

3. Write down MOLE RATIO with UNKNOWN on top and GIVEN on bottom

4. MULTIPLY the numbers on TOP5. DIVIDE by the numbers on the

BOTTOM

Page 64: Week 24 Chemistry

Example 1

How many moles of hydrogen gas are needed to react completely with 2.0 moles of nitrogen gas?

3 H2 + N2 2NH3

Step 1: Write and Balance the EquationStep 2: Write down GIVEN number AND unit Step 3: Write down MOLE RATIO with UNKNOWN on top and GIVEN on bottomStep 4: MULTIPLY the numbers on TOPStep 5: DIVIDE by the numbers on the BOTTOM

Page 65: Week 24 Chemistry

Example 2Sodium reacts with nitrogen gas to produce sodium nitride. If a student collects 2.5 moles of sodium nitride after the reaction has been completed, determine the number of moles of nitrogen that were initially present.

___Na + ___N2 ___Na3N

Page 66: Week 24 Chemistry

Guided Practice Teacher:

1. Will show the problem on the board Students:

1. Take 27 seconds to read the problem and write your given and unknown

2. Take 68 seconds to solve the problem with your shoulder partner

3. Be ready to share when Mr. Ghosh says SWAG

Page 67: Week 24 Chemistry

Guided Practice #1Solid lead reacts with a solution of hydrochloric acid to produce solid lead(II) chloride and hydrogen gas as shown in the reaction below:

Pb + 2 HCl PbCl2 + H2

If you produce 3.40 moles of lead(II) chloride, how many moles of hydrochloric acid did you react?

6.80 moles

Page 68: Week 24 Chemistry

Guided Practice #2Iodine reacts with chlorine gas to produce iodine trichloride. If 0.96 moles of iodine trichloride are produced, how many moles of chlorine gas were initially reacted?

1.4 moles

Page 69: Week 24 Chemistry

Independent Practice

Take some time to practice some mole-to-mole stoichiometry problems

Practice makes Perfect

85%

Page 70: Week 24 Chemistry

1.3.2 moles 2.16.0 moles3.1400 moles

Independent Practice Answer Key

Page 71: Week 24 Chemistry

Closing What is the process used to solve mole to

mole stoichiometry problems?

Page 72: Week 24 Chemistry

Warm Up: 7 Minutes

You should be working SILENTLY

Stay in your own seat

Complete the Warm Up on the half sheet of paper you got at the doorBarium Chloride reacts with Silver (I) Nitrate to form Barium Nitrate and Silver (I) Chloride.

___BaCl2 + ___AgNO3 ___Ba(NO3)2 + ___AgCl 

a) Balance and classify the chemical reaction

b) If 2.3 moles of Silver (I) Nitrate react, how many moles of Silver Chloride are formed?

Write the Learning Target

Page 73: Week 24 Chemistry

Agenda Warm Up [10 minutes] Quiz [20 minutes] Answer Key [4 minutes] How to Track [3 minutes] Independent Tracking [7 minutes] Closing [1 Minutes]

Page 74: Week 24 Chemistry

Material Covered on Quiz

Balancing EquationsTypes of ReactionsWriting EquationsMole to Mole Stoichiometry

Page 75: Week 24 Chemistry

Goal

To demonstrate mastery, we are shooting for

85%

Page 76: Week 24 Chemistry

Check Point

What is your goal for this quiz?

85%

Page 77: Week 24 Chemistry

Expectations for Quiz

Clear your desk of everything except a....

1. Writing Utensil2. Calculator

Periodic Table is provided to you

Page 78: Week 24 Chemistry

Expectations Students will keep eyes on own paper

Cheating will result in an automatic ZERO Students will remain SILENT for the duration of the

quiz

Page 79: Week 24 Chemistry

Good Luck!!

Page 80: Week 24 Chemistry

Answer KeyAs Mr. Ghosh goes through the answers, highlight the ones you got wrong1. C2. B3. B4. B5. B6. C7. D8. D9. B10. C11. D

12. C13. B14. D15. C16. C17. B18. C19. C20. D21. C

Page 81: Week 24 Chemistry

Class Averages (and Top Scores)Period Top Score Class Average

1 81% 39%3 81% 49%4 95% 62%5 90% 41%6 95% 61%7 100% 54%

Page 82: Week 24 Chemistry

What does Tracking Look Like?

Objectives

Questions on the

Exam

Your Points

Total Points

Percent Mastery

Bar Graph Mastery85%  or

Chem.8BMole

Calculations

Page 83: Week 24 Chemistry

What does Tracking Look Like?

Objectives

Questions on the

Exam

Your Points

Total Points

Percent Mastery

Bar Graph Mastery85%  or

Chem.8BMole

Calculations

1-5

Page 84: Week 24 Chemistry

What does Tracking Look Like?

Objectives

Questions on the

Exam

Your Points

Total Points

Percent Mastery

Bar Graph Mastery85%  or

Chem.8BMole

Calculations

1-5 ???

[3 if you got 3

out of 5 correct

Page 85: Week 24 Chemistry

What does Tracking Look Like?

Objectives

Questions on the

Exam

Your Points

Total Points

Percent Mastery

Bar Graph Mastery85%  or

Chem.8BMole

Calculations

1-5 ???

[3 if you got 3

out of 5 correct

5

Page 86: Week 24 Chemistry

What does Tracking Look Like?

Objectives

Questions on the

Exam

Your Points

Total Points

Percent Mastery

Bar Graph Mastery85%  or

Chem.8BMole

Calculations

1-5 ???

[3 if you got 3

out of 5 correct

5 Your points x100 Total points

Page 87: Week 24 Chemistry

Percent MasteryCathy received 1 point out of 4

possible points. What is her percent mastery?

Your points x100 Total points

25%

Page 88: Week 24 Chemistry

What does Tracking Look Like?

Objectives

Questions on the

Exam

Your Points

Total Points

Percent Mastery

Bar Graph

Mastery85%  or

Chem.8BMole

Calculations

1-5 ???

[3 if you got 3

out of 5 correct

5 Your points x100 Total points

Shade in your % mastery

Page 89: Week 24 Chemistry

Your Turn1. Go to shschem.weebly.com (our class website)

Bookmark this if you haven’t do so already!!!2. Hover over my page:

Mr. Ghosh Quizzes and Tests ESL (or regular) Chemistry

3. Find “Unit 6 Tracking” 4. Download (and save) this and fill it out

Page 90: Week 24 Chemistry

Closing

How was your Quiz Today?

What topics do you feel you still need review on?