Date:___________________________________ Explain : Give a detailed account including reasons or causes. Explore : Undertake a systematic process of discovery. Interpret : Use knowledge and understanding to recognize trends and draw conclusions from given information. Justify : Give valid reasons or evidence to support an answer or conclusion. Predict : Give an expected result. Show : Give the steps in a calculation or derivation. Sketch : Represent by means of a diagram or graph (labelled as appropriate). The sketch should give a general idea of the required shape or relationship, and should include relevant features. Solve : Obtain the answer(s) using algebraic and/or numerical and/or graphical methods. Suggest Propose a solution, hypothesis or other possible answer. Chemistry Guide – pg. 190 Topic 1: G11 – Chemistry – SL – Term 1 – 2021/2022 Page 15 of 248 Date:___________________________________ Stoichiometric relationships G11 – Chemistry – SL – Term 1 – 2021/2022 Page 16 of 248 Class Work Date:___________________________________ Classwork: Ø Write the formulas of the following ionic compounds: Name 1. Rubidium oxide Criss-cross Formula I. Rbs 0 2. Potassium nitride KzN 2. 3. Calcium sulfide 3. Cas 4. Copper ( II) Sulfide 4. Cus 5. CoI3 6. Zinc oxide 6. ZnO 7. Manganese (VII) fluoride 7. Mn Ift 8. Chromium (VI) iodide 8. GIG 9. Ammonium iodide 9. NHuI 10. Zinc sulphite 10 5. Cobalt (III) iodide 11. Iron (II) carbonate 11 12. Cobalt (III) nitrate 12 13. Nickel (II) perchlorate 13 14. Copper (I) Phosphate 16. Tin (IV) sulphide ¥ "¥ : 16 Co ( NO 3) 3 . Ni . . 15 1 G11 – Chemistry – SL – Term 1 – 2021/2022 Ee COs . 14 15. Chromium (II) oxide Znsoz . ( cloy)z Cee , Poy . . GO sñsz 2 Page 35 of 248 HL p. 36 Am p. 29 Class Work Date:___________________________________ Ø Write the name for the following compounds: NaOH 1. Sodium hydroxide K3PO4 2. Potassium phosphate Ba (ClO4)2 3. Barium perchlorate NH4F 4. Ammonium flouride Cs2 CO3 5. Cesium carbonate CaSO4 6. Calcium sulfate HCN 7. Hydrogen cyanide Fe (NO3)3 8. Iron (III) nitrate Fe (NO2)3 9. Iron (III) nitrite Ø Writing the formulas for diatomic molecules: 1. 2. 3. 4. Oxygen O2 Nitrogen N2 Hydrogen H2 Flourine F2 (For Covalent) Students need to know the diatomic elements Chlorine Cl2 5. 6. Bromine 7. Iodine Br2 I2 Ø Naming Covalent Compounds G11 – Chemistry – SL – Term 1 – 2021/2022 Page 36 of 248 HL p. 37 Am p. 30 Class Work / Home Work Date:___________________________________ Classwork: Carbon tetrachloride Diphosphorus pentaoxide Xxxxx Tetra phosphorus decaoxide Xxxx Sulfur hexaflouride Dinitrogen trioxide Xxxx Sulfur trioxide Oxygen dichloride Carbon dioxide Xxxxx Iodine monochloride Carbon disulfide Sulfur triiodide Selenium dichloride Dinitrogen trioxide Dichlorine heptaoxide 3 Phosphorus trichloride Nitrogen trihydride or ammonia G11 – Chemistry – SL – Term 1 – 2021/2022 Nitrogen tribromide Xxxxx Dihydrogen monoxide Tetra phosphorus decasulfide Carbon monoxide Xxxx Page 37 of 248 HL p. 38 Am p. 31 Home Work Date:___________________________________ Bos : V02 Ifs N 203 NH3 PI } Si 02 BzBru Cay PA3 Nz Os NIS SBU NO 502 Bfs Cay G11 – Chemistry – SL – Term 1 – 2021/2022 Page 38 of 248 SL p. 38 HL p. 39 Am p. 32 Date:___________________________________ Class Work Synthesis CO2 (g) Double replacement 3 NaNO3 + Au 3 2 2 H2 O + O 2 FeF2 + I2 G11 – Chemistry – SL – Term 1 – 2021/2022 Single replacement Decomposition Single replacement Page 40 of 248 HL p. 41 Am p. 38 Date:___________________________________ Home Work Ø Writing a balanced net Ionic equation for reactions in aqueous solutions: Complete ionic equations: show all chemicals that exist as ions in solution as ions. The equations reflect all of the ions shown in a normal equation. Only aqueous chemicals are shown as ions! Note that barium sulfate is NOT written as ions because it is a (s) forming out of solution… in other words a precipitate Example: Regular equation: Li2SO4 (aq) + Ba(NO3)2 (aq) à 2 LiNO3 (aq) + BaSO4 (s) Complete ionic equation: 2 Li+ (aq) + SO42- (aq) + Ba2+ (aq) + 2 NO3- (aq) à BaSO4 (s) + 2 Li+ (aq) + 2 NO3- (aq) Spectator ions: Sometimes a complete ionic equation shows ions that are unchanged by the reaction. These ions are known as spectator ions. In the above example both lithium ions and nitrate ions are spectators because the terms 2 Li+ (aq) and 2 NO3- (aq) appear unchanged on both sides of the equation. Complete ionic equation with spectator ions circled: 2 Li+ (aq) + SO42- (aq) + Ba2+ (aq) + 2 NO3- (aq) à BaSO4 (s) + 2 Li+ (aq) + 2 NO3- (aq) Net ionic equations: When the spectator ions are cancelled out of a complete ionic equation, the equation is greatly simplified! This is known as a net ionic equation. Ba2+ (aq) + SO42- (aq) à BaSO4 (s) For the above example the net ionic equation is: Like regular equations, ionic equations are balanced for atoms and also for charge! Practice: for each equation, write the complete ionic equation first, then the net ionic equation. 1) Ba(ClO3)2 (aq) + Na2S (aq) à Complete net Ba ?aq -12605 BaS (s) + 2 NaClO3 (aq) : ' ,aa , , Net ionic : -12 Nate SEE ,→ + ,, , Bases, -12%9++2605 Bases) Ba "caq, -1 S } 2) 2 Na3PO4 (aq) + 3 ZnSO4 (aq) à 3 Na2SO4 (aq) + Zn3(PO4)2 (s) Complete : 6 Na Net : + + 2 POP zzn + 37h2-1+38042 → 6N 2++2,3043lag lag ) - → / G11 – Chemistry – SL – Term 1 – 2021/2022 -1+3805 Znz ( Poul is, - - - a + > Znz IPO4) 21st Page 41 of 248 HL p. 42 Am xx Date:___________________________________ Home Work 3) SnCl4 (aq) + 2 (NH4)2S (aq) Complete: - Sncetiyce Net + à 4 NH4Cl (aq) + 4NHñ+2S2-→4NHut_ 46 Sn4+ -1252laal→ - : SnS2 (s) caqj - + Snszcs , Snszcs ) Complete and balance these two first! The precipitates formed will be aluminum hydroxide and silver sulfate 4) 5) 2AlBr3 (aq) + 3 Ba(OH)2 (aq) à JALLOH )zcs , 2 AgNO3 (aq) + MgSO4 (aq) à G11 – Chemistry – SL – Term 1 – 2021/2022 -BBaBñzcaq ) Ag2S04lsj+M9lN03)2( Page 42 of 248 HL p. 43 Am xxx aq , Class Work Date:___________________________________ Section 1.1 Questions Worksheet [1]: States of Matter Simulation Lab Substance Selected: Argon Solid Liquid Gas Solid particles are arranged in a fixed lattice. Held by strong intermolecular forces. Liquid particles are a bit far away from each other. Held by weak intermolecular forces Gas particles are very far away from each other. Spreading out and filling the space in the container. No intermolecular forces between the gas particles Diagram of molecules Sentence explaining how molecules are moving. arranged Book 4. Now use the menu on the right side of the program to select Water and Solid. Next, use the slider on the bottom of the program to Add Heat. Notice the thermometer at the top of the program. What temperature scales is this thermometer showing? Kelvin and degrees Celsius 5. What happens to water particles as you increase the temperature? Increasing the temperature allowed the water particles to move faster. 6. a. What is the melting/freezing point of water in Celsius? b. What is the melting/freezing point of water in Kelvin? ° 0C 273 K ÉÉ% so - 273 c. Predict the conversion relationship between the Kelvin and the Celsius melting/freezing point of water showing your work: Temp in K = Temp in C + 273 G11 – Chemistry – SL – Term 1 – 2021/2022 Page 43 of 248 HL p. 44 Am p. 39 Class Work Date:___________________________________ 0 7 a. What is the boiling/condensation point of water in Celsius? 100 C b. Calculate the boiling/condensation point of water in Kelvin? Show your calculations. Check your answer using the thermometer on the simulation. Temp = 100 + 273 = 373 K G11 – Chemistry – SL – Term 1 – 2021/2022 Page 44 of 248 HL p. 45 Am p. 41 Class Work Date:___________________________________ Worksheet [3]: HEATING CURVES Heating curves are usually introduced when discussing intermolecular forces and states of matter. Heat is added to a substance at a constant rate and the temperature is measured. Analysis of the curve can be related to the concept of kinetic energy (particle motion). Exothermic Depending variable OU Temperature % Boiling or evaporation Exothermic Liquid to gas E. Solid to liquid Liquid Only Gas Only Endothermic Melting Endothermic Solid Only Heat or time Independent variable 1. Label the x- and y-axes on the graph using you independent and dependent variables. Don’t forget the units. 2. On the graph identify the phase(s) present in each segment (A®B, B®C, etc.). You may use the simulation for assistance. Use water as an example. 3. Is the kinetic energy changing during segment A®B? Explain. _________________________________________________________________________________________ Yes; _________________________________________________________________________________________ temperature is increasing Average kinetic energy of the particles increases. ________________________________________ particles in the solid state vibrate FASTER. 4. Explain why the temperature is constant during segment D®E even though energy is being added? During boiling; temperature remains constant. _________________________________________________________________________________________ Heat added is used to BREAK the intermolecular forces _________________________________________________________________________________________ liquid will change into gas _____________________________________ G11 – Chemistry – SL – Term 1 – 2021/2022 Page 45 of 248 HL p. 46 Am p. 42 Date:___________________________________ Home Work Worksheet [3]: Heating and Cooling Curve Questions 1 The solid and liquid phases of water can exist in a state of equilibrium at 1 atmosphere of pressure and a temperature of: ① o (1) 0 C Melting (heat added to weaken IMF) o o (2) 100 C (3) 273 C o (4) 373 C T.a. Freezing pt = melting pt 2 Solid The table below shows the normal boiling point of four compounds. Liquid Woo Freezing (heat removed to strengthen IMF) g When explaining Boiling points always relate to the strength of the intermolecular forces 1) The higher the boiling point 2) the stronger the intermolecular forces Which compound has the strongest intermolecular forces? ☐ (1) HF(l) (2) CH3Cl(l) (3) CH3F(l) 3 (4) HCl(l) 3) the more heat energy needed to break the Intermolecular forces A sample of water is heated from a liquid at 40 oC to a gas at 110 oC Gas only Li qu id on ly Boiling Liquid to gas a) On the heating curve diagram provided above, label each of the following regions: Liquid, only QR ST Gas, only Phase change RS G11 – Chemistry – SL – Term 1 – 2021/2022 Page 46 of 248 HL p. 47 Am p. 43 Date:___________________________________ Home Work b) For section QR of the graph, state what is happening to the water molecules as heat is added. The temperature is increasing ; Average Kinetic energy increases; the liquid particles are moving FASTER. c) For section RS of the graph, state what is happening to the water molecules as heat is added. Temperature is constant. Heat added is used to BREAK the intermolecular forces. liquid is changing into gas. Boiling or evaporation. 4 The graph below represents the heating curve of a substance that starts as a solid below its freezing point. Melting point is the temperature at which solid starts to melt MP * . . . - - -- . - Find it from the y-intercept What is the melting point of this substance? (1) 30 oC (2) 55 oC (3) 90 oC (4) 120 oC 0 Base your answers to questions 5 through 8 on the information below. Given the heating curve where substance X starts as a solid below its melting point and is heated uniformly: Ga s In general Boiling point - - - - - - - - . Boiling Li qu - Melting ⑧ - - -- - - - > So l id Melting point he . - id ← - - G11 – Chemistry – SL – Term 1 – 2021/2022 e. Inclined lines (sloped) Relate temperature to the speed of the particles and state the phase of matter only. Plateau lines Temperature is constant Heat added is used to weaken or break the intermolecular forces Or heat removed to make or strengthen the intermolecular forces. State the phase change melting, freezing.... Page 47 of 248 HL p. 48 Am p. 44 Home Work Date:___________________________________ 5 Identify the process that takes place during line segment DE of the heating curve. Boiling 6 Identify a line segment in which the average kinetic energy is increasing. AB / CD / EF 7 Using "o" to represent particles of substance X, draw at least five particles as they would appear in the substance at point F. 8 Describe, in terms of particle behavior or energy, what is happening to substance X during line segment BC. ☐ Temperature remains constant during melting heat added is used to WEAKEN the intermolecular forces Solid changes to liquid . Base your answers to questions 9 and 10 on the heating curve below, which represents a substance starting as a solid below its melting point and being heated at a constant rate over a period of time. 9 What is happening to the average kinetic energy of the particles during segment BC? temperature is constant; KE will remain constant. 10 In which process does a solid change directly into a vapor? o (1) condensation (2) sublimation (3) deposition (4) solidification Sublimation Mess Solid Gas I. Deposition Example Iacs , G11 – Chemistry – SL – Term 1 – 2021/2022 : → Ing) Page 48 of 248 HL p. 49 Am p. 45 Date:___________________________________ Home Work Worksheet [4]: Mixtures Worksheet Heterogeneous mixture Pure substance (compound) Heterogeneous mixture Homogenous mixture Homogenous mixture Homogenous mixture Heterogeneous mixture Pure substance (compound) 8 8 Not a physical technique Filtration Filtration Crystallization Distillation Chromatography Electrolysis Distillation G11 – Chemistry – SL – Term 1 – 2021/2022 Page 49 of 248 HL p. 50 Am p. 46 Date:___________________________________ Home Work Filtration then distillation Fractional distillation Filtration Crystallization Paper chromatography Use a magnet. Iron is magnetic but Aluminium is non magnetic. Iron will be attracted by a magnet and collected Place the mixture in a beaker and add water. Stir the mixture using a stirring rod To allow sodium chloride to dissolve in water. Sand is insoluble in water and will Precipitate or settle in the bottom of the beaker. Perform filtration where sand will be collected on the filter paper. Heat the salt solution, until all the water evaporates and salt remains in the beaker. Yes, air must be condensed first to change all the gas components into liquids. Perform fractional distillation to separate the different liquids of different boiling points. The distillate is pure water. Pure water has a fixed boiling point 100 oC. Take a sample of the collected distillate and place it in a test tube. Heat the sample until it starts boiling, record the temperature using a thermometer. If the sample boils at 100 degrees then it is pure water. G11 – Chemistry – SL – Term 1 – 2021/2022 Page 50 of 248 HL p. 51 Am p. 47 Date:___________________________________ Home Work ① Worksheet [5]: Naming and Writing the chemical formulas: (I) Write the formulas for the following compounds: Hg kDa 1. magnesium cyanide :_______________________________ Brz 2. mercury(II) bromide: _______________________________ 3. Hg silver nitrate : ______________________________________ AGNOS 4. zinc(II) hydroxide: __________________________________ Znl OH )z Mq¥É ¥YÉ # 5. Iron(III) sulfate : ___________________________________ Fez (SO a) 3 Hg% 6. mercury(II) chloride: ________________________________ 7. sodium phosphate: __________________________________ Naz Pole ¥E 8. sodium hydroxide : __________________________________ Nao 't 9. ammonium chloride : _________________________________ Nitya Mgsou 10. magnesium sulfate : __________________________________ ⑦ Ng¥pis - 11. potassium cyanide : ___________________________________ KCN ii. 12. Lithuim phosphate : ___________________________________ a kzs 13. potassium sulfide : ________________________________________ ⑨ NH¥9 É " 14. tin(IV) chloride : __________________________________________ Senate Alf, 15. aluminum fluoride : ________________________________________ ¥11 Mgclz 16. magnesium chloride: _______________________________________ Cao ① 17. calcium oxide : _____________________________________________ Fez 3) 3 18. iron(III) carbonate: __________________________________________ ⑤ A :¥§ " ⑦ k¥N , %pAoBo£¥¥④sn¥% ca 14 " ↳I ⑧+¥G11 – Chemistry – SL – Term 1 – 2021/2022 HL p. 52 Am p. 33 Page 51 of 248 " Date:___________________________________ Class Work/ Home Work (II) Name the following compounds: 1. CuCl : _________________________________ Copper (I) chloride Tin (IV) hydroxide 2. Sn(OH)4 : ______________________________ Ammonium carbonate 3. (NH4)2CO3 : _____________________________ Hydrogen sulfate (sulfuric acid) 4. H2SO4 : _________________________________ Sodium cyanide 5. NaCN : _________________________________ 6. Na2SO4 : ________________________________ Sodium sulfate Copper (II) hydroxide 7. Cu(OH)2 : _______________________________ Iron (III) chloride 8. FeCl3 : __________________________________ 9. K2CO3 : _________________________________ Potassium carbonate 10. LiNO3 : _________________________________ Lithium nitrate Sodium phosphate 11. Na3PO4 : _________________________________ Calcium sulfide 12. CaS : ____________________________________ Iron (III) chloride 13. FeCl3 : ___________________________________ 14. NiCl2 : ___________________________________ Nickel (II) chloride 15. K2S : _____________________________________ Potassium sulfide Copper (I) iodide 16. CuI : _____________________________________ 17. HF : ______________________________________ Hydrogen flouride Hydrogen carbonate 18. H2CO3 : ___________________________________ 19. K3PO4 : ___________________________________ Potassium phosphate Sodium sulfate 20. Na2SO4 : __________________________________ Aluminum hydroxide 21. Al(OH)3 : __________________________________ Mercury oxide 22. HgO : _____________________________________ Ammonium sulfate 23. (NH4)2SO4 : __________________________________ G11 – Chemistry – SL – Term 1 – 2021/2022 Page 52 of 248 HL p. 53 Am p. 34 Home Work Date:___________________________________ Worksheet [6]: Naming and Writing the chemical formulas: Name the following ionic compounds: 1) Ammonium chloride NH4Cl _____________________________________ 2) Iron (III) nitrate Fe(NO3)3 _____________________________________ 3) Titanium (III) bromide TiBr3 _____________________________________ 4) Copper (I) phosphide Cu3P _____________________________________ 5) Tin (III) phosphate SnPO4 _____________________________________ 6) Magnesium nitrite Mg(NO2)2 _____________________________________ 7) Lead (IV)sulfate Pb(SO4)2 _____________________________________ 8) Beryllium hydrogen carbonate Be(HCO3)2 _____________________________________ 9) Manganese sulfite Mn2(SO3)3 _____________________________________ 10) Aluminum cyanide Al(CN)3 _____________________________________ Write the formulas for the following compounds: ÷ *BMqwqj*µ " " 11) chromium (VI) phosphate _____________________________________ 12) vanadium (IV) carbonate _____________________________________ 13) tin (II) nitrite _____________________________________ 14) C. 0203 cobalt (III) oxide _____________________________________ 15) Ti titanium (II) phosphite _____________________________________ 2 16) vanadium (V) sulfide _____________________________________ 17) chromium (III) hydroxide _____________________________________ 18) LII lithium iodide_____________________________________ 19) " lead (II) nitride _____________________________________ 20 silver bromide _____________________________________ Snark 3) :* ⑤t;¥¥ AgBr G11 – Chemistry – SL – Term 1 – 2021/2022 Page 53 of 248 HL p. 54 Am p. 35 Date:___________________________________ Class Work Worksheet [7]: Balance the equations below: G11 – Chemistry – SL – Term 1 – 2021/2022 Page 54 of 248 HL p. 55 Am p. 48 Home Work Date:___________________________________ Worksheet [8: Balance the following equations and indicate the type of reaction taking place: 3 3 Double replacement 3 2 3 Double replacement 2 3 3 Single replacement 3 2 2 Combustion (2, 2, 1) 1/2 Decomposition 2 3 3 Single replacement 1 1 1 Synthesis 2 2 Double replacement G11 – Chemistry – SL – Term 1 – 2021/2022 Page 55 of 248 HL p. 56 Am p. 49 Class Work (mandatory lab) Date:___________________________________ 5. Using a test tube holder, heat the CaCO3 strongly for about 3 minutes. Insert a burning wood splint into the test tube. If carbon dioxide gas (CO2) is present, it will put the flame out. Note any change in the appearance of the residue in the test tube PART C SINGLE REPLACEMENT 6. Stand a clean, dry test tube in the test tube rack. Add about 5 mL of 3 M hydrochloric acid (HCl) to the tube. CAUTION. Handle acids with care. They can cause painful burns. Do not inhale any HCl fumes. Now carefully drop a small piece of zinc metal (Zn) into the acid in the test tube. Observe and record what happens. 7. Using a test tube holder, invert a second test tube over the mouth of the test tube in which the reaction is taking place. See the diagram to the right. Remove the inverted tube after 30 seconds and quickly insert a burning wood splint into the mouth of the tube. (A “pop” indicates the presence of hydrogen gas.) Note the appearance of the substance in the reaction test tube. 8. Add about 5 mL of 1 M copper (II) sulfate (CuSO4) solution to a clean, dry test tube. Place a small amount of zinc metal in the solution. Note the appearance of the solution and the zinc before and after the reaction. PART D DOUBLE REPLACEMENT 9. Add about 2 mL of 0.1 M Lead Nitrate Pb(NO3)2 to a clean, dry test tube. Next, add about 2 mL of 0.1 M Potassium Iodide (KI) to the test tube. Observe what happens and note any changes in the mixture OBSERVATIONS AND DATA DATA TABLE Sample Before reaction After reaction A. Synthesis 1. Copper 2. Magnesium Solid shiny metal Shiny silvery metal strip White solid is formed. White powder substance B. Decomposition Thermal decomposition 3. Copper (II) carbonate C. Single Replacement 4. Zinc + Hydrochloric acid 5. Zinc + Copper (II) sulfate 6. Bromine water + potassium iodide G11 – Chemistry – SL – Term 1 – 2021/2022 Green powder (solid) Bubbles form (gas is produced) Black substance is formed Zinc is a metal strip And HCl is a clear solution Bubbles appear (gas in formed) Zinc strip decreases in size Copper sulfate is a blue aqueous solution Blue color starts to fade Zinc strip decreases in size Bromine is yellow/ orange in color Potassium iodide is colorless solution Page of The reaction turns58 from orange to brown 248 SL p. 58 HL p. 61 Am p. 53 Class Work (mandatory lab) Date:___________________________________ D. Double Replacement 7. lead (II) nitrate(aq) + potassium iodide(aq) Two clear solutions A yellow precipitate is formed A yellow precipitate is formed 8. silver nitrate + potassium iodide Two clear solutions EQUATIONS: Write the chemical equation and Balance each of the equations by inserting the proper coefficients where needed. PART A SYNTHESIS 1. (One product is formed) Copper + oxygen —> Copper (II) oxide 2Cu + O2 —> 2CuO Shiny metal 2. white/ greenish Magnesium + oxygen —> magnesium oxide 2Mg + O2 —> 2MgO Silver color White PART B DECOMPOSITION (One reactant only) thermal decomposition (Breaking down using heat) 3. CuCO3 —> CuO + CO2 Green black Gas PART C SINGLE REPLACEMENT 4. Zn + 2HCl —> ZnCl2 + H2 5. Zn + CuSO4 —> ZnSO4 + Cu 6. Hydrogen gas in experimentally identifies by the “pop sound” test. Approach a lighted match near the gas; if it turns off with a pop sound this indicates that the gas is a hydrogen gas. Blue solution Br2 + 2KI —> 2KBr + I2 PART D DOUBLE REPLACEMENT 7. Pb(NO3)2 + 2KI —> PbI2 + 2KNO3 Yellow precipitate 8. AgNO3 + KI —> AgI + KNO3 yellow Precipitate G11 – Chemistry – SL – Term 1 – 2021/2022 Page 59 of 248 HL p. 62 Am p. 54 Date:___________________________________ Class Work (mandatory lab) CONCLUSIONS AND QUESTIONS: 1. In Part D: Double Replacement Reaction, state which product is the precipitate. Explain what that indicates regarding that species solubility. PbI2 and AgI are the precipitate. A precipitate is an insoluble solid product. 3. Balance the equations below using the smallest whole number coefficients. Identify the type of reaction represented by each equation. a.2AgNO3(aq) + Cu(s) → Cu(NO3)2(aq) + 2 Ag(s) ↓ Single replacement b. BaCl2(aq) + Na2SO4(aq) → BaSO4(s) ↓ + 2 NaCl(aq) c. Cl2(g) + 2 NaBr(aq) →2 NaCl(aq) + Br2(l) d.2KClO3(s) → 2KCl(s) + 3 O2(g) ↑ G11 – Chemistry – SL – Term 1 – 2021/2022 Double replacement Single replacement Decomposition Page 60 of 248 HL p. 63 Am p. 55 Class Work (mandatory lab) Date:___________________________________ e. AlCl3(aq) + 3NH4OH(aq) →3 NH4Cl(aq) + Al(OH)3(s) ↓ f.2H2(g) +1 O2(g) → 2 H2O(g) G11 – Chemistry – SL – Term 1 – 2021/2022 Double replacement Synthesis Page 61 of 248 HL p. 64 Am p. 55