PART I · SHORT RESPONSE第一部分 · 短答题AP-style MCQ + ON/BC short answer · 25 marksAP 风格选择题 + 安/卑省考短答 · 共 25 分
Section A · Short ResponseA 部分 · 短答题
Mix of multiple-choice and short-answer items. For MCQs, circle the letter; show enough work in the margin that a marker could verify. For short-answer items, write balanced equations with state symbols where asked. No calculator needed for Q1-Q3; calculator permitted on Q4-Q5.本节包含选择题与短答题。选择题请圈出字母答案，并在空白处写下足以让阅卷人核对的过程。短答题需要在要求处书写带有状态符号的配平方程式。Q1-Q3 不需要计算器；Q4-Q5 可用计算器。
A student mixes two clear, colourless solutions. Which observation provides the STRONGEST evidence that a chemical reaction has occurred?学生将两种透明无色溶液混合。以下哪种观察现象为化学反应发生提供了最有力的证据？
(A)The mixture feels slightly warm混合物感觉略微变热
(B)A yellow solid forms that cannot be filtered back into either original solution形成黄色固体，无法过滤还原为任一原溶液
(C)The volume of liquid increases液体体积增大
(D)The solution turns cloudy then clears after stirring溶液变混浊后搅拌后变清
Which of the following is the correctly balanced equation for the reaction of aluminium with oxygen to form aluminium oxide, $\text{Al}_2\text{O}_3$?下列哪个是铝与氧气反应生成氧化铝 $\text{Al}_2\text{O}_3$ 的正确配平方程式？
Calcium carbonate, $\text{CaCO}_3$, decomposes when strongly heated to form two products.碳酸钙 $\text{CaCO}_3$ 在强热下分解生成两种产物。
(a)Write the balanced equation for this decomposition, including state symbols.书写该分解反应的配平方程式，包括状态符号。[2]
(b)Name the two products formed.命名生成的两种产物。[2]
(c)State one piece of observable evidence that the reaction is occurring.写出一条可观察到的反应正在发生的证据。[1]
Q4MEDIUM中🇨🇦 AB阿AB Diploma-style阿尔伯塔毕业考风格§4 Single replacement单置换 · Chem 20 D GO1[6 marks][6 分]
Zinc metal is placed into a solution of copper(II) sulfate, $\text{CuSO}_4\text{(aq)}$. A red-brown solid forms on the zinc and the blue colour of the solution fades.锌金属放入硫酸铜 $\text{CuSO}_4\text{(aq)}$ 溶液中。锌上形成红棕色固体，溶液的蓝色逐渐褪去。
(a)Write the balanced molecular equation for this reaction, with state symbols.书写该反应的配平分子方程式，含状态符号。[2]
(b)Classify this reaction type and state the general pattern.确定该反应类型，并写出其通式。[2]
(c)Explain, using the activity series, why zinc displaces copper but copper would NOT displace zinc.利用活动性顺序解释为何锌能置换铜，而铜不能置换锌。[2]
Propane, $\text{C}_3\text{H}_8$, undergoes complete combustion in excess oxygen.丙烷 $\text{C}_3\text{H}_8$ 在过量氧气中完全燃烧。
(a)Write the balanced equation for the complete combustion of propane, with state symbols (assume gaseous water).书写丙烷完全燃烧的配平方程式，含状态符号（假设水为气态）。[3]
(b)State the two products of complete combustion of any hydrocarbon.写出任何烃类完全燃烧的两种产物。[2]
(c)Name one product that forms if combustion is incomplete, and explain why this is an environmental concern.写出不完全燃烧时生成的一种产物，并解释为何这引发环境问题。[3]
PART II · EXTENDED RESPONSE第二部分 · 简答题AP-feeder FRQ + honors · 30 marksAP 衔接简答题 + 荣誉级 · 共 30 分
Section B · Extended ResponseB 部分 · 简答题
Show every step of reasoning. Write balanced equations including state symbols in every final answer. For classification questions, name the reaction type AND state the general pattern (A + B → AB, etc.). Calculator permitted throughout Part II.每一步推理都要写出。每个最终方程式答案须配平并含状态符号。分类题需命名反应类型并写出通式（A + B → AB 等）。第二部分全程可用计算器。
An aqueous solution of lead(II) nitrate, $\text{Pb(NO}_3)_2\text{(aq)}$, is mixed with an aqueous solution of potassium iodide, $\text{KI(aq)}$. A bright yellow precipitate forms immediately.硝酸铅 $\text{Pb(NO}_3)_2\text{(aq)}$ 水溶液与碘化钾 $\text{KI(aq)}$ 水溶液混合，立即生成亮黄色沉淀。
(a)Identify the precipitate by name and formula, using solubility rules to justify your choice.用溶解度规则命名并写出沉淀的化学式，并说明理由。[2]
(b)Write the balanced molecular equation for this reaction, including state symbols.书写该反应的配平分子方程式，含状态符号。[2]
(c)Write the complete ionic equation.书写完全离子方程式。[2]
(d)Identify the spectator ions and write the net ionic equation.确定旁观离子，并书写净离子方程式。[2]
Solutions of sodium sulfate, $\text{Na}_2\text{SO}_4\text{(aq)}$, and barium chloride, $\text{BaCl}_2\text{(aq)}$, are combined.硫酸钠 $\text{Na}_2\text{SO}_4\text{(aq)}$ 溶液与氯化钡 $\text{BaCl}_2\text{(aq)}$ 溶液混合。
(a)Predict whether a precipitate forms. Use solubility rules to justify, identifying any insoluble product.预测是否会生成沉淀。利用溶解度规则说明理由，并确定任何不溶性产物。[2]
(b)Write the balanced molecular equation with state symbols.书写带有状态符号的配平分子方程式。[2]
(c)Write the net ionic equation for this reaction.书写该反应的净离子方程式。[2]
For each of the following pairs of aqueous solutions, predict whether a reaction occurs. If it does, write the balanced molecular equation, complete ionic equation, and net ionic equation. If no reaction occurs, write NR and explain using solubility rules.对于下列各对水溶液，预测是否会发生反应。若反应发生，书写配平分子方程式、完全离子方程式和净离子方程式；若不反应，写 NR 并利用溶解度规则解释。
(a)$\text{AgNO}_3\text{(aq)}$ and $\text{NaCl(aq)}$$\text{AgNO}_3\text{(aq)}$ 与 $\text{NaCl(aq)}$[4]
(b)$\text{KNO}_3\text{(aq)}$ and $\text{NaCl(aq)}$$\text{KNO}_3\text{(aq)}$ 与 $\text{NaCl(aq)}$[4]
PART III · MODELING / APPLIED第三部分 · 建模与应用AB Diploma + Universal · 26 marks阿省毕业考 + 通用题型 · 共 26 分
Section C · Modeling and ApplicationsC 部分 · 建模与应用
Define all chemical species at the start of each question. Write balanced equations with state symbols. Conclude each question with a one-sentence answer in context. Calculator permitted throughout Part III.每题开始时定义所有化学物种。书写带状态符号的配平方程式。每题以一句结合情境的完整句子作答。第三部分全程可用计算器。
A chemistry student observes four different reactions in lab. For each description, (i) classify the reaction type and (ii) write the balanced equation with state symbols.化学实验中，一名学生观察了四种不同的反应。对于每种描述，(i) 确定反应类型，(ii) 书写带状态符号的配平方程式。
(a)Magnesium ribbon burns in oxygen gas to form a white powder, magnesium oxide.镁带在氧气中燃烧，生成白色粉末氧化镁。[2]
(b)Hydrogen peroxide solution slowly decomposes into water and oxygen gas.过氧化氢溶液缓慢分解生成水和氧气。[2]
(c)Iron metal is placed in copper(II) sulfate solution; a red-brown solid deposits on the iron.铁金属放入硫酸铜溶液中，铁上沉积出红棕色固体。[2]
(d)Ethane, $\text{C}_2\text{H}_6$, burns completely in excess oxygen.乙烷 $\text{C}_2\text{H}_6$ 在过量氧气中完全燃烧。[2]
Q11MEDIUM中🇨🇦 ON安🇨🇦 AB阿AP-feeder FRQAP 衔接简答题§6 + §7 Precipitation and net ionic沉淀与净离子 · SCH3U C3.2[9 marks][9 分]
A water-treatment facility uses a precipitation reaction to remove calcium ions from hard water. A technician adds sodium carbonate solution, $\text{Na}_2\text{CO}_3\text{(aq)}$, to a sample of hard water containing dissolved calcium chloride, $\text{CaCl}_2\text{(aq)}$.一家水处理厂通过沉淀反应去除硬水中的钙离子。技术员向含有溶解氯化钙 $\text{CaCl}_2\text{(aq)}$ 的硬水样品中加入碳酸钠溶液 $\text{Na}_2\text{CO}_3\text{(aq)}$。
(a)Use solubility rules to predict whether a precipitate forms, and name it.利用溶解度规则预测是否生成沉淀，并命名。[2]
(b)Write the balanced molecular equation with state symbols.书写带状态符号的配平分子方程式。[2]
(c)Write the complete ionic equation.书写完全离子方程式。[2]
(d)Write the net ionic equation.书写净离子方程式。[1]
(e)Explain in one sentence how this precipitation reaction achieves water softening.用一句话解释沉淀反应如何实现软化水处理。[2]
A student conducts three experiments. Read each description carefully and answer all parts.学生进行了三个实验。仔细阅读每个描述并回答所有小题。
(a)Experiment 1: Hydrogen gas is burned in a limited supply of oxygen, producing only water. Write the balanced equation. Is this a synthesis or combustion reaction? Justify your answer.实验 1：氢气在有限供应的氧气中燃烧，仅生成水。书写配平方程式。这是化合反应还是燃烧反应？说明理由。[3]
(b)Experiment 2: Copper(II) chloride solution, $\text{CuCl}_2\text{(aq)}$, is mixed with sodium hydroxide solution, $\text{NaOH(aq)}$. A blue precipitate forms. Write the molecular, complete ionic, and net ionic equations. Use solubility rules to identify the precipitate.实验 2：氯化铜溶液 $\text{CuCl}_2\text{(aq)}$ 与氢氧化钠溶液 $\text{NaOH(aq)}$ 混合，生成蓝色沉淀。书写分子方程式、完全离子方程式和净离子方程式。利用溶解度规则确定沉淀。[4]
(c)Experiment 3: A strip of silver metal is placed in a solution of copper(II) nitrate. Predict whether a reaction occurs; use the activity series to justify. If a reaction occurs, write the balanced equation; if not, write NR.实验 3：将一条银金属条放入硝酸铜溶液中。预测是否发生反应；利用活动性顺序说明理由。若发生反应，书写配平方程式；若不反应，写 NR。[2]
🇺🇸 US NGSS美国 NGSSHS-PS1-2 · HS-PS1-7
🇨🇦 Ontario安大略SCH3U C2.1 · C2.2 · C3.1 · C3.2
🇨🇦 British Columbia不列颠哥伦比亚Science 10: chemical reactions, balancing, reaction typesScience 10：化学反应、配平、反应类型
🇨🇦 Alberta阿尔伯塔Chem 20 D · D GO1 · D GO2 · D GO3
Full Syllabus Map in ../Study Guides/Unit_6_Chemical_Reactions_and_Equations.html. Sections 1-7: evidence of reaction, balancing, synthesis/decomposition, single/double replacement, combustion, solubility/precipitation, net ionic equations.完整大纲对照表见 ../Study Guides/Unit_6_Chemical_Reactions_and_Equations.html。第 1-7 节：反应证据、配平、化合/分解、单/双置换、燃烧、溶解度/沉淀、净离子方程式。