agenda – may 25: bonding review – any questions? bonding review – any questions? notes –...

AGENDA – May 25:AGENDA – May 25: Bonding Review – Any Questions?Bonding Review – Any Questions?

Notes – Chemical ReactionsNotes – Chemical Reactions

Class work – go over balancing Class work – go over balancing chemical equations challengechemical equations challenge

HW –complete balancing equations HW –complete balancing equations handouts - for extra help go to: handouts - for extra help go to: http://funbasedlearning.com/chemistry

http://funbasedlearning.com/chemistry


AGENDA – May 26:AGENDA – May 26: Bonding QuizBonding Quiz

HW –go to: HW –go to: http://funbasedlearning.com/chemistry

Complete “Classic Chembalancer”Complete “Classic Chembalancer”



Chapter 21.6Chapter 21.6

Chemical ReactionsChemical Reactions

Goals of this chapter:Goals of this chapter:

• How to balance those equations How to balance those equations (remember Law of Conservation of (remember Law of Conservation of Mass)Mass)

• How to categorize chemical How to categorize chemical reactions: decomposition, reactions: decomposition, combustion, single replacement, combustion, single replacement, double replacement, combinationdouble replacement, combination

CHEMICAL REACTIONCHEMICAL REACTION

the changing of substances the changing of substances into other substances by the into other substances by the breaking of old bonds and breaking of old bonds and the formation of new bondsthe formation of new bonds

Consider the animation of the Consider the animation of the following following reaction::CHCH33CHCH22OH + HOH + H22SOSO44 H H22O + CO + C22HH44 + H + H22SOSO44

http://www.leadingdesign.co.uk/chemistry/

In a chemical reaction:In a chemical reaction:

the way in which atoms are the way in which atoms are joined together changesjoined together changes

as reactants are converted to as reactants are converted to products, the bonds that hold products, the bonds that hold atoms together are broken and atoms together are broken and new bonds are formed new bonds are formed

the atoms themselves are the atoms themselves are neither created nor destroyedneither created nor destroyed

REACTANTS REACTANTS PRODUCTS PRODUCTS

The atoms in the products The atoms in the products are the same atoms that are the same atoms that were in the reactants, were in the reactants,

they are just they are just

arranged differentlyarranged differently..

Symbols you will see and Symbols you will see and use when writing chemical use when writing chemical

equations:equations: ΔΔ heat added-written above heat added-written above

arrowarrow <=> reversible reaction<=> reversible reaction Any symbol written above Any symbol written above

the arrow in a reaction the arrow in a reaction indicates its use as a indicates its use as a catalystcatalyst

CatalystCatalyst

a substance that a substance that speeds up speeds up a reactiona reaction without being without being used up in the reaction used up in the reaction

The Law of Conservation of Mass number and type number and type number number

and typeand type

http://dbhs.wvusd.k12.ca.us/Equations/Conserv-of-Mass.html

http://dbhs.wvusd.k12.ca.us/Equations/Conserv-of-Mass.html

Balancing Chemical Balancing Chemical EquationsEquations

Save O and H for lastSave O and H for last If If polyatomicpolyatomic does not does not break apart across the break apart across the , , count it as one elementcount it as one element

Use trial and error: test Use trial and error: test various coefficientsvarious coefficients

To write a chemical equation To write a chemical equation correctly, the number of atoms correctly, the number of atoms on the left side of a chemical on the left side of a chemical equation (arrow) has to be equation (arrow) has to be precisely precisely balancedbalanced with the with the atoms on the right side of the atoms on the right side of the equation. equation.


writing chemical equations, the writing chemical equations, the number in front of the molecule's number in front of the molecule's symbol (symbol (coefficientcoefficient) indicates ) indicates the number of molecules the number of molecules participating in the reaction-if participating in the reaction-if no coefficient appears in front no coefficient appears in front of a molecule, we interpret this of a molecule, we interpret this as meaning one.as meaning one.


Try these:Try these: SS88 + O + O22 SO SO33

HgO HgO Hg + O Hg + O22

Zn + HCl Zn + HCl ZnCl ZnCl22 + H + H22

Na + HNa + H22O O NaOH + H NaOH + H22

FeFe22OO33 + H + H22 Fe + H Fe + H22OO

Answers:Answers: 1, 12, 81, 12, 8

2, 2, 12, 2, 1

1, 2, 1, 11, 2, 1, 1

2, 2, 2, 12, 2, 2, 1

1, 3, 2, 3 1, 3, 2, 3

and these…and these…

HH33POPO44 + HCl + HCl PCl PCl55 + H + H2200

HCl + KHCl + K22COCO33 KCl + H KCl + H22O + COO + CO22

Ca(ClOCa(ClO33))22 CaCl CaCl22 + O + O22

CC22HH55OH + OOH + O22 CO + H CO + H22OO

Xe + FXe + F22 XeF XeF66

Answers:Answers:

1, 5, 1,41, 5, 1,4

2, 1, 2, 1, 12, 1, 2, 1, 1

1, 1, 31, 1, 3

1, 2, 2, 31, 2, 2, 3

1, 3, 11, 3, 1

AGENDA -May:AGENDA -May:

Submit HWSubmit HW

Balancing Chemical Reactions Balancing Chemical Reactions ActivityActivity

HW – Describing Chemical HW – Describing Chemical Reactions WSReactions WS


Submit HWSubmit HW

Notes – Chemical Reactions: Notes – Chemical Reactions: SynthesisSynthesis

Class work – Synthesis WS 1Class work – Synthesis WS 1

Homework – Synthesis WS 2Homework – Synthesis WS 2

Pre-ClassPre-Class

NHNH44NONO33 N N22O + HO + H22OO

AuAu22OO33 Au + O Au + O22

CC44HH1010 + O + O22 CO CO22 + H + H22OO

FeFe33OO44 + H + H22 Fe + H Fe + H22O O

II22 + HNO + HNO33 HIO HIO33 + NO + H + NO + H22

Answers:Answers:

1, 1, 21, 1, 2

2, 4, 32, 4, 3

2, 13, 8, 102, 13, 8, 10

1, 4, 3, 41, 4, 3, 4

2, 6, 4, 6, 12, 6, 4, 6, 1

5 Types of Chemical 5 Types of Chemical ReactionsReactions

Combination (synthesis)Combination (synthesis) DecompositionDecomposition Single replacementSingle replacement Double replacementDouble replacement CombustionCombustion

Combination (synthesis)Combination (synthesis)

ReactantsReactants: either 2 : either 2 elements OR 2 compoundselements OR 2 compounds

ProductProduct: MUST be a compound: MUST be a compound

USUALLY combination isUSUALLY combination is

2 reactants 2 reactants 1 product1 product

Combination (synthesis)Combination (synthesis)

ExamplesExamples

NN22 + 3H + 3H22 2NH 2NH33

2H2H22 + O + O22 2H 2H22OO

4P + 5O4P + 5O22 2P 2P22OO55

SS88 + 12O + 12O22 8SO 8SO33

Getting specific about Getting specific about synthesissynthesis::

Two or more reactants Two or more reactants one one productproduct

Examples: Examples:

Na + ClNa + Cl22

2Na + Cl2Na + Cl22 2NaCl 2NaCl

SynthesisSynthesis: Predicting : Predicting ProductsProducts

Rb + ClRb + Cl22

Rb + ClRb + Cl22 RbCl RbCl

2Rb + Cl2Rb + Cl22 2RbCl 2RbCl

K + ClK + Cl22

K + ClK + Cl22 KCl not balanced KCl not balanced

2K + Cl2K + Cl22 2KCl 2KCl

SynthesisSynthesis: Predicting : Predicting ProductsProducts

Ba + OBa + O22

Ba + OBa + O22 BaO not balanced BaO not balanced

2Ba + O2Ba + O22 2BaO 2BaO

Ca + BrCa + Br22

Ca + BrCa + Br22 CaBr CaBr2 2 balanced as isbalanced as is


Submit HW & Pre-ClassSubmit HW & Pre-Class

Notes – Chemical Reactions: Notes – Chemical Reactions: DecompositionDecomposition

Class work – Decomposition WS #1Class work – Decomposition WS #1

Homework – Decomposition WS #2Homework – Decomposition WS #2

DecompositionDecomposition

The opposite of synthesisThe opposite of synthesis

22KClOKClO33 2KCl + 3O 2KCl + 3O22

2Ag2Ag22O O 4Ag + O 4Ag + O22

DecompositionDecomposition

Seltzer water (carbonic acid) Seltzer water (carbonic acid) decomposes to produce decomposes to produce

carbon dioxide and water:carbon dioxide and water:

HH22COCO33 CO CO22 + H + H22OO

Decomposition: Decomposition: one reactantone reactant, , two (or more products)two (or more products)

Getting specific about Getting specific about decompositiondecomposition::

one reactant one reactant two or more two or more products products

Exact opposite of a synthesis Exact opposite of a synthesis reactionreaction

Energy must be present (heat, Energy must be present (heat, light or electricity)light or electricity)

Examples of Examples of decompositiondecompositionthat you will have to be that you will have to be

able to do:able to do:LiBr LiBr LiBr LiBr Li Li + Br+ Br2 2 not balancednot balanced

2LiBr 2LiBr 2Li 2Li + Br+ Br22

MgO MgO MgO MgO Mg + O Mg + O22 not balanced not balanced

2MgO 2MgO 2Mg + O 2Mg + O22

AGENDA -MAY:AGENDA -MAY: Submit HWSubmit HW

Notes – Chemical Reactions: Notes – Chemical Reactions: Single ReplacementSingle Replacement

Class work – Mini-Lab: Balancing Class work – Mini-Lab: Balancing Chemical ReactionsChemical Reactions

Homework – Finish Mini-LabHomework – Finish Mini-Lab

Single replacementSingle replacement

one atom takes the place of one atom takes the place of another atom in a compound another atom in a compound

A + BC A + BC B + AC B + AC

A has replaced B in this A has replaced B in this reactionreaction


ExamplesExamples 2NaCl + F2NaCl + F22 2NaF + Cl 2NaF + Cl22

Na + HNa + H22O O NaOH + H NaOH + H22

K + MgBrK + MgBr22 KBr + Mg KBr + Mg


Are either Are either Two metals and one Two metals and one

nonmetalnonmetal

OROR Two nonmetals=halogens and Two nonmetals=halogens and

one metalone metal


Examples of two metals and one Examples of two metals and one nonmetalnonmetal

2Al + 3CuCl2Al + 3CuCl22 2AlCl 2AlCl33 + 3Cu + 3Cu


Examples of two nonmetals and Examples of two nonmetals and one metalone metal

Mg + HCl Mg + HCl MgCl MgCl22 + H + H22

Try these SR reactions:Try these SR reactions:Use the following steps:Use the following steps: Identify which reactants are switching Identify which reactants are switching placesplaces

Determine neutral ratio for new compoundDetermine neutral ratio for new compound Draw reaction arrow and complete reactionDraw reaction arrow and complete reaction

1.1. MgBrMgBr22 and Cl and Cl22

2. Al and Fe2. Al and Fe22OO33

3. CuS and Mg3. CuS and Mg

4. KI and F4. KI and F22

Answers:Answers:

1. 1. Magnesium Bromide and Chlorine Magnesium Bromide and Chlorine MgBrMgBr22 + Cl + Cl22 Bromine and ChlorineBromine and Chlorine ==> MgCl==> MgCl22 + Br + Br22

2. 2. Aluminum and Iron (III) OxideAluminum and Iron (III) Oxide Al + FeAl + Fe22OO33 Aluminum and IronAluminum and Iron ==> Fe + Al==> Fe + Al22OO33 2Al + Fe2Al + Fe22OO3 3 ==> 2Fe + Al==> 2Fe + Al22OO33

Answers:Answers:

Copper (II) Sulfide and Copper (II) Sulfide and MagnesiumMagnesium

CuS + MgCuS + Mg Copper and MagnesiumCopper and Magnesium ==> Cu + MgS==> Cu + MgS

Potassium Iodide and FluorinePotassium Iodide and Fluorine 2KI + F2KI + F22 Iodine and FluorineIodine and Fluorine ==> 2KF + I==> 2KF + I22

AGENDA 13-MAY:AGENDA 13-MAY: Submit HWSubmit HW

Notes – Chemical Reactions: Double Notes – Chemical Reactions: Double ReplacementReplacement

Class work – Mini Lab: Balancing DR Class work – Mini Lab: Balancing DR reactionsreactions

Homework – Finish DR mini lab & Test Homework – Finish DR mini lab & Test Friday!Friday!

DOUBLE REPLACEMENTDOUBLE REPLACEMENT

positive ions are always written positive ions are always written firstfirst when listing the product when listing the product

METALS are positive ions and METALS are positive ions and NON-METALS are negative ionsNON-METALS are negative ions

a positive must join with a a positive must join with a negative negative

Getting specific about Getting specific about double replacementdouble replacement::

Involves the exchange of Involves the exchange of positive cationspositive cations

Gas, precipitate or water is Gas, precipitate or water is always producedalways produced

Examples of Examples of double double replacement:replacement:

KBr + AgNOKBr + AgNO33

KBr + AgNOKBr + AgNO33 AgBr(s) + KNO AgBr(s) + KNO33 balanced balanced

Ppt formedPpt formed

HNOHNO33 + LiOH + LiOH

HNOHNO33 + LiOH + LiOH LiNO LiNO33 + H + H22O balancedO balanced

Water formedWater formed

Try theseTry theseSTRATEGY:STRATEGY:

Determine charge on all atoms present Determine charge on all atoms present and who is switchingand who is switching

Create neutral compoundsCreate neutral compounds Balance equation!Balance equation!

1.1. BaClBaCl22 (aq) + K (aq) + K22S (aq) S (aq)

2.2. FeS (s) + HCl (aq) FeS (s) + HCl (aq)

3.3. CaBrCaBr22(aq) + HCl (aq) + HCl

AnswersAnswers BaClBaCl22(aq) + K(aq) + K22S(aq)S(aq)

BaBa2+2+ Cl Cl1-1- + K + K1+1+ S S2-2- BaS + KClBaS + KCl BaClBaCl22(aq) + K(aq) + K22S(aq) S(aq) BaS(s) + 2KCl BaS(s) + 2KCl

FeS(s) + HCl(aq)FeS(s) + HCl(aq) FeFe2+2+ S S2-2- + H + H1+1+ Cl Cl1-1- HH22S + FeClS + FeCl22 FeS(s) + 2HCl(aq) FeS(s) + 2HCl(aq) H H22S(g) + FeClS(g) + FeCl22(aq)(aq)

Ca(OH)Ca(OH)22(aq) + 2HCl(aq)(aq) + 2HCl(aq) CaCa2+2+ OH OH1-1- + H + H1+1+ Cl Cl1-1- CaClCaCl22 + H + H22OO Ca(OH)Ca(OH)22(aq) + 2HCl(aq) (aq) + 2HCl(aq) CaCl CaCl22(aq) + 2H(aq) + 2H22OO

Getting specific about Getting specific about double replacementdouble replacement::

How to predict products:How to predict products:

ID cationsID cations Switch them!Switch them! Write proper formulasWrite proper formulas BalanceBalance

Examples of Examples of double double replacement:replacement:

FeClFeCl22 + K + K22S S

FeClFeCl22 + K + K22S S FeS + KCl not balanced FeS + KCl not balanced

FeClFeCl22 + K + K22S S FeS + 2KCl FeS + 2KCl

Pb(NOPb(NO33))22 + K + K22CrOCrO44

Pb(NOPb(NO33))22 + K + K22CrOCrO44 PbCrO PbCrO44 + KNO + KNO33

Pb(NOPb(NO33))22 + K + K22CrOCrO44 PbCrO PbCrO44 + 2KNO + 2KNO33

AGENDA -MAY:AGENDA -MAY:

Notes – Chemical ReactionsNotes – Chemical Reactions• Identifying combustion reactionsIdentifying combustion reactions

Class work – Reactions PacketClass work – Reactions Packet

Homework – Finish Packet & Test Homework – Finish Packet & Test Friday!Friday!

Combustion Combustion

ReactantsReactants: Carbon and : Carbon and Hydrogen containing compound Hydrogen containing compound reacting with oxygenreacting with oxygen

ProductProduct: Carbon dioxide and : Carbon dioxide and waterwater

CCxxHHyy + O + O22 COCO22 + + HH22OO

Getting specific about Getting specific about combustioncombustion::

Oxygen is present on the Oxygen is present on the reactant side.reactant side.

Hydrocarbon = CHydrocarbon = CxxHHyy

Products are always carbon Products are always carbon dioxide and waterdioxide and water

Examples of Examples of combustion:combustion:

CC22HH22 + O + O22

CC22HH22 + O + O22 CO CO22 + H + H22O not balancedO not balanced

CC22HH22 + 2.5O + 2.5O22 2CO 2CO22 + 1H + 1H22O O

2C2C22HH22 + 5O + 5O22 4CO 4CO22 + 2H + 2H22OO

CC33HH88 + O + O22 CC33HH88 + O + O22 CO CO22 + H + H22O not balancedO not balanced

CC33HH88 + 5O + 5O22 3CO 3CO22 + 4H + 4H22OO

AGENDA -MAY:AGENDA -MAY:

No Notes!No Notes!

Class work – Practice Test!Class work – Practice Test!

Homework – Study!Homework – Study!

Predicting Product Predicting Product Formation - How to write Formation - How to write

products:products:• Determine the type of reaction: Determine the type of reaction:

synthesis, decomposition, s/d synthesis, decomposition, s/d replacement, or combustionreplacement, or combustion

• Make sure elements present on Make sure elements present on left are present on rightleft are present on right

• Make sure all charges are net Make sure all charges are net zerozero

• Balance equation.Balance equation.

What we need to know for What we need to know for the Test:the Test:

Balance Chemical Equations!Balance Chemical Equations! Coefficients go in front of formulas, and Coefficients go in front of formulas, and multiply across them)multiply across them)

Subscripts DO NOT CHANGE!Subscripts DO NOT CHANGE!

Identify Chemical ReactionsIdentify Chemical Reactions Synthesis (one product)Synthesis (one product) Decomposition (one reactant)Decomposition (one reactant) Single Replacement (one element and one Single Replacement (one element and one compound)compound)

Double replacement (two ionic compounds, Double replacement (two ionic compounds, acids/bases)acids/bases)

Combustion (COCombustion (CO22 and H and H22O Products)O Products)

An OverviewAn Overview

Identifying ReactionsIdentifying Reactions One product?One product?

Synthesis ReactionSynthesis Reaction One reactant?One reactant?

DecompositionDecomposition One compound and one element?One compound and one element?

Single replacementSingle replacement Two compounds?Two compounds?

Double replacementDouble replacement One hydrocarbon (COne hydrocarbon (CxxHHyy) and oxygen?) and oxygen?

CombustionCombustion

An OverviewAn OverviewSYNTHESISSYNTHESIS

Write chemical formulas for Ionic Write chemical formulas for Ionic Compounds!Compounds!

Na + ClNa + Cl22

1.1. Determine charge on ionsDetermine charge on ions Na 1+; Cl 1-Na 1+; Cl 1-

2.2. Predict products and determine correct Predict products and determine correct ionic formulaionic formula

NaNa1+1+ + Cl + Cl1-1- NaCl NaCl

3.3. Balance Chemical Equation!Balance Chemical Equation! 22Na + ClNa + Cl22 22NaClNaCl

An OverviewAn OverviewDECOMPOSITIONDECOMPOSITION

MgBrMgBr22

1.1. Break two elements upBreak two elements up Mg; BrMg; Br

2.2. Identify diatomic elements (if any)Identify diatomic elements (if any) Bromine!Bromine!

3.3. Write out productsWrite out products MgBrMgBr22 Mg + BrMg + Br22

Balance chemical reactionBalance chemical reaction Balanced as is!Balanced as is!

An OverviewAn OverviewSINGLE REPLACEMENTSINGLE REPLACEMENT


NaCl + KNaCl + K

1.1. Determine charge on ionsDetermine charge on ions Na 1+; Cl 1-; K 1+Na 1+; Cl 1-; K 1+

2.2. Predict products and switch ionsPredict products and switch ions1.1. NaNa1+1+ Cl Cl1-1- + K + K1+1+ K K1+1+ Cl Cl1-1- + Na + Na1+1+

Determine correct ionic formula (criss-Determine correct ionic formula (criss-cross)cross)

2.2. NaCl + K NaCl + K KCl + Na KCl + Na Balance Chemical Equation!Balance Chemical Equation!

Balanced as is!Balanced as is!


You Try!You Try!

CaICaI22 + Li + Li

1.1. Determine charge on ionsDetermine charge on ions Ca 2+; I 1-; Li 1+Ca 2+; I 1-; Li 1+

2.2. Predict products and switch ionsPredict products and switch ions1.1. CaCa2+2+ I I1-1- + Li + Li1+1+ Li Li1+1+ I I1-1- + Ca + Ca2+2+


CaICaI22 + Li + Li LiI + Ca LiI + Ca Balance Chemical Equation!Balance Chemical Equation!

CaICaI22 + + 22Li Li 22LiI + CaLiI + Ca

An OverviewAn OverviewDOUBLE REPLACEMENTDOUBLE REPLACEMENT


CaCa33NN22 + NaI + NaI

1.1. Determine charge on ionsDetermine charge on ions Ca 2+; N 3-; Na 1+; I 1-Ca 2+; N 3-; Na 1+; I 1-

2.2. Predict products and switch ionsPredict products and switch ions CaCa2+2+ N N3-3- + Na + Na1+1+ I I1-1- Na Na1+1+ N N3-3- + Ca + Ca2+ 2+ I I1-1-


CaCa33NN22 + NaI + NaI CaI CaI22 + Na + Na33NN

1.1. Balance Chemical Equation!Balance Chemical Equation! CaCa33NN22 + + 66NaI NaI 33CaICaI22 + + 22NaNa33NN


You Try!You Try!

AlAl22OO33 + Zn(NO + Zn(NO33))22

1.1. Determine charge on ionsDetermine charge on ions Al 3+; O 2-; Zn 2+ NOAl 3+; O 2-; Zn 2+ NO3 3 1-1-

2.2. Predict products and switch ionsPredict products and switch ions AlAl3+3+ O O2-2- + Zn + Zn2+2+ NO NO33

1-1- Al Al3+3+ NO NO331-1- + Zn + Zn2+2+ O O2-2-


AlAl22OO33 + Zn(NO + Zn(NO33))22 Al(NOAl(NO33))33 + ZnO + ZnO Balance Chemical Equation!Balance Chemical Equation!

AlAl22OO33 + + 33Zn(NOZn(NO33))22 22Al(NOAl(NO33))33 + + 33ZnOZnO

An OverviewAn OverviewCOMBUSTIONCOMBUSTION


CC33HH88 + O + O22

1.1. Recognize combustion reactionRecognize combustion reaction

2.2. Predict productsPredict products CC33HH88 + O + O22 CO CO22 + H + H22O O

Balance Chemical Equation!Balance Chemical Equation!1.1. CC33HH88 + + 55OO22 33COCO22 + + 44HH22OO


You Try!You Try!

CC22HH22 + O + O22

1.1. Recognize combustion reactionRecognize combustion reaction

2.2. Predict productsPredict products CC22HH22 + O + O22 CO CO22 + H + H22O O

Balance Chemical Equation!Balance Chemical Equation! 22CC22HH22 + + 55OO22 44COCO22 + + 22HH22OO

AGENDA 3-JAN:AGENDA 3-JAN:

Predicting Product formation Predicting Product formation QUEST THURSDAYQUEST THURSDAY1.1. Questions?Questions?

CW/REVIEW – Predicting Products CW/REVIEW – Predicting Products Practice testPractice test

Homework – Part I of labHomework – Part I of lab


Predicting Product formation Predicting Product formation QUEST TOMORROWQUEST TOMORROW1.1. Questions?Questions?

CW/REVIEW – LABCW/REVIEW – LAB

Homework – STUDYHomework – STUDY


QUESTQUEST

Pre-class (5 points)Pre-class (5 points)

1.1. Balance: Al + ClBalance: Al + Cl22 AlCl AlCl33

2.2. What type of reaction is this?What type of reaction is this?

3.3. What type of reaction is What type of reaction is characterized by the breaking characterized by the breaking apart of a single reactant? apart of a single reactant?

Pre-class (continued)Pre-class (continued)

4.4. What is the formula for What is the formula for sodium sulfate?sodium sulfate?

5.5. Balance: CHBalance: CH44 + O + O22 H H22O O + CO+ CO22


1.1. What type of reaction is What type of reaction is described by two elements of described by two elements of compounds switching places?compounds switching places?

2.2. Identify the two contenders:Identify the two contenders:CaClCaCl22 + 2Li + 2Li 2LiCl + Ca2LiCl + Ca

3.3. What type of reaction is #2?What type of reaction is #2?


4.4. What element is present in What element is present in every combustion reaction?every combustion reaction?

5.5. Complete this single Complete this single replacement reaction:replacement reaction:CuClCuCl22 + K + K


1.1. Name the five types of Name the five types of chemical reactions we learned chemical reactions we learned about.about.

2.2. What kind of reaction is What kind of reaction is this: this: BaClBaCl22 + Na + Na22SOSO44 BaSO BaSO44 + NaCl + NaCl

BALANCE THIS REACTIONBALANCE THIS REACTION


3.3. Write the product:Write the product:Na + ClNa + Cl22

4.4. Balance the above reactionBalance the above reaction

5.5. Write the products of this Write the products of this HYDROCARBON combustion:HYDROCARBON combustion:CC22HH44 + O + O22

Pre class (5 points)Pre class (5 points)

1.1. What are the compounds What are the compounds written on the LEFT side of written on the LEFT side of the arrow called?the arrow called?

2.2. TRUE or FALSE We can change TRUE or FALSE We can change subscripts in formulas to subscripts in formulas to balance a chemical equation?balance a chemical equation?

3.3. Balance this equation:Balance this equation:

Al + FeAl + Fe22OO33 Fe + Al Fe + Al22OO33

agenda – may 25: bonding review – any questions? bonding review – any questions? notes –...

Documents

reaction slide

comchemistry slide

chemical equation arrow

number of atoms

type slide

combination slide

catalyst slide

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