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 PresentationTRANSCRIPT
Intro to ReactionsWeek 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
Agenda Warm Up [7 minutes] Notes/Examples [17 minutes] Guided Practice [12 minutes] Independent Practice [13 minutes] Closing [4 Minutes]
Types of Reactions Definition General Equation (Example)
Synthesis(Combination)
Types of Reactions Definition General Equation (Example)
Synthesis
Types of Reactions Definition General Equation (Example)
Synthesis Two compounds combine to form a more complicated
product.
Types of Reactions Definition General Equation (Example)
Synthesis Two compounds combine to form a more complicated
product.
A + B AB8Fe + S8 8 FeS
Decomposition
Types of Reactions Definition General Equation (Example)
Synthesis Two compounds combine to form a more complicated
product.
A + B AB8Fe + S8 8 FeS
Decomposition
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
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
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
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
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
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
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
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
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
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
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
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
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
Guided Practice #1
A.C + O2 CO2
B.MgCl2 Mg + Cl2Synthesis
Guided Practice #2
A.4 Al + 3 O2 2 Al2CO3
B.2 H2O 2 H2 + O2
Decomposition
Guided Practice #3
A.Zn + 2 HCl ZnCl2 + H2
B.2 Li + Cl2 2 LiCl
Single Replacement
Guided Practice #4
A.Zn + 2 HCl ZnCl2 + H2
B.AgNO3 + NaCl AgCl + NaNO3
Double Replacement
Guided Practice #5
A.CH4 + 2 O2 CO2 + 2 H2OB.2 KBr + BaI2 2 KI + BaBr2
Combustion
+ O2
Independent Practice
Take some time to practice balancing and classifying the following equations
Practice makes Perfect
85%
Closing What are the different types of chemical
reactions?
What type of reaction does the following equation represent?
AB + CD AD + CB
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
Agenda Warm Up [7 minutes] Notes/Examples [15 minutes] Guided Practice [12 minutes] Independent Practice [15 minutes] Closing [4 Minutes]
How do we write equations?
C10H16 + 16 Cl 10 C + 16 HCl
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...
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
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)
Example 2:Iron + Water Iron (III) Oxide + Hydrogen
Example 3:When lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate and water are formed.
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
Guided Practice #1Sodium Sulfate + Zinc (II) Hydroxide Sodium Hydroxide + Zinc (II) Sulfate
Na2SO4 + Zn(OH)2 2 NaOH + ZnSO4
Double Replacement
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
Guided Practice #3
When propane (C3H8) is burned in oxygen gas, carbon dioxide and water are produced.
C3H8 + 5 O2 3 CO2 + 4 H2OCombustion
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
Independent Practice
Take some time to practice writing the following equations
Practice makes Perfect
85%
Closing What are the steps in writing a chemical
reaction?
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.
Agenda Warm Up [7 minutes] Lab Purpose/Expectations [4 minutes] Pre-Lab [6 minutes] Types of Reactions Lab [34 minutes] Closing [2 Minutes]
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
Laboratory Purpose
To see examples of different types of reactions
Pre-Lab
Take 5:26 minutes to complete the remaining pre-lab questions
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
Pre-Lab #2When calcium oxide is combined with water, calcium hydroxide is formed.
CaO + H2O Ca(OH)2Synthesis
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
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
Closing
Let’s see the Synthesis reaction from the lab!!
Mg + O2 MgOHomework
Finish all the questions in the lab handout
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
Agenda Warm Up [7 minutes] Notes/Examples [15 minutes] Guided Practice [12 minutes] Independent Practice [15 minutes] Closing [4 Minutes]
What is Stoichiometry???
Calculations of quantities in chemical reactions.
Today’s Stoichiometric focus
Mole to Mole
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
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
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
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
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
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
Independent Practice
Take some time to practice some mole-to-mole stoichiometry problems
Practice makes Perfect
85%
1.3.2 moles 2.16.0 moles3.1400 moles
Independent Practice Answer Key
Closing What is the process used to solve mole to
mole stoichiometry problems?
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
Agenda Warm Up [10 minutes] Quiz [20 minutes] Answer Key [4 minutes] How to Track [3 minutes] Independent Tracking [7 minutes] Closing [1 Minutes]
Material Covered on Quiz
Balancing EquationsTypes of ReactionsWriting EquationsMole to Mole Stoichiometry
Goal
To demonstrate mastery, we are shooting for
85%
Check Point
What is your goal for this quiz?
85%
Expectations for Quiz
Clear your desk of everything except a....
1. Writing Utensil2. Calculator
Periodic Table is provided to you
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
Good Luck!!
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
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%
What does Tracking Look Like?
Objectives
Questions on the
Exam
Your Points
Total Points
Percent Mastery
Bar Graph Mastery85% or
Chem.8BMole
Calculations
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
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
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
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
Percent MasteryCathy received 1 point out of 4
possible points. What is her percent mastery?
Your points x100 Total points
25%
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
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
Closing
How was your Quiz Today?
What topics do you feel you still need review on?