📚 Year 11 CIE Chemistry: Vocabulary & Terminology Quick Memory Guide | Year 11 CIE 化学：词汇术语速记指南
Mastering chemistry at Year 11 level for CIE often comes down to learning the exact terminology used to describe invisible particles, state changes, and energy transfers. This guide pairs every core term with a memory trigger and explains it in clear bilingual text so you can recall definitions accurately under exam pressure.
掌握 CIE Year 11 化学，往往取决于你是否能准确运用描述微粒、状态变化和能量转移的术语。这份速记指南为每个核心词汇搭配记忆线索，并用清晰的中英双语解释，帮助你在考试压力下精准回忆定义。
1. Atomic Structure & Periodic Table | 原子结构与元素周期表
Atoms are the building blocks of matter. The atomic number (Z) tells you the number of protons, which defines the element. Think 'Z is the proton zip code'. The mass number (A) is the total of protons + neutrons. Remember 'A = All nucleons'.
原子是物质的基本单元。原子序数 (Z) 表示质子数，决定了元素种类。可以记成“Z 是质子的门牌号”。质量数 (A) 是质子数与中子数之和。联想 “A = All nucleons（所有核子）”。
Isotopes are atoms of the same element with different numbers of neutrons, hence different mass numbers. The chemical properties are identical because electron configuration remains the same. A simple memory: 'Isotopes — identical spot on the table, different weight'.
同位素是同一元素的中子数不同的原子，因而质量数不同。由于电子排布相同，化学性质几乎完全一样。巧记：“同位素——周期表同一位置，体重不同”。
The Periodic Table is organised by increasing atomic number. Groups are vertical columns; elements in the same group have the same number of outer electrons, leading to similar chemistry. Periods are horizontal rows, showing the filling of new electron shells. Remember: 'Groups go down like a family tree, periods step across'.
元素周期表按原子序数递增排列。族是纵列，同族元素最外层电子数相同，因此化学性质相似。周期是横行，表示新电子层的填充。记法：“族像家谱向下延伸，周期水平横跨”。
For electronic structure, electrons fill shells as 2,8,8,18... The outer shell is the valence shell, and valence electrons determine bonding. The noble gas configuration (full outer shell) explains the stability of Group 18 elements.
电子排布遵循 2,8,8,18... 的规则。最外层是价电子层，价电子决定成键方式。稀有气体构型（全满最外层）解释了第 18 族元素的稳定性。
2. Chemical Bonding & Structure | 化学键与结构
An ionic bond is the electrostatic attraction between oppositely charged ions. It forms when metals transfer electrons to non‑metals. Think 'Ionic = I give away electrons' . The formula of ionic compounds gives the simplest ratio of ions in the giant lattice, e.g. NaCl is a 1:1 array of Na⁺ and Cl⁻.
离子键是带相反电荷离子之间的静电吸引力。当金属将电子转移给非金属时形成。可以记成 “Ionic 就是我给出电子”。离子化合物的化学式表示巨型晶格中离子的最简比，如 NaCl 是 Na⁺ 和 Cl⁻ 按 1:1 排列的阵列。
A covalent bond is a shared pair of electrons between two non‑ ak intermolecular forces between molecules, which is why they have low melting points. Use 'Co‑valent = cooperation in valence shells'.
共价键是两个非金属原子间共用一对电子。像 H₂O 这样的简单分子内共价键很强，但分子间作用力弱，因此熔点低。记忆：“Co‑valent = 在价层中合作共享”。
Giant covalent structures (diamond, graphite, silicon dioxide) have networks of strong covalent bonds throughout the whole structure, giving very high melting points. Metallic bonding is the attraction between positive metal ions and a sea of delocalised electrons, making metals malleable and conductive.
巨型共价结构（金刚石、石墨、二氧化硅）在整个结构中都由强共价键构成的网络，因此熔点极高。金属键是正金属离子与离域电子海之间的吸引力，使金属具有延展性和导电性。
electronegativity difference. This creates a dipole, with partial charges δ⁺ and δ⁻. Think 'polar = pulling power difference'.
极性共价键产生于因电负性差异导致电子对不均等共用时。这会产生偶极，带有部分电荷 δ⁺ 和 δ⁻。联想：“polar = 拉电子的本领有差异”。
3. Stoichiometry & The Mole | 化学计量与摩尔
The mole is the amount of substance containing 6.02 × 10²³ particles (Avogadro's constant). It links the atomic scale to measurable masses. The shortcut: 'A mole is a chemist's dozen — just 6.02 × 10²³ instead of 12'.
摩尔是含有 6.02 × 10²³ 个微粒（阿伏伽德罗常数）的物质的量。它连接了原子尺度与可称量的质量。巧记：“摩尔是化学家的一打——只不过 6.02 × 10²³ 而非 12 个”。
Relative atomic mass (Aᵣ) is the weighted average mass of an atom of an element compared to 1/12 the mass of carbon‑12. Relative molecular mass (Mᵣ) sums the Aᵣ of all atoms in a molecule. Molar mass (M) has units g/mol and is numerically equal to Mᵣ. Use: 'Aᵣ is for atoms, Mᵣ is for molecules, M puts it in grams.'
相对原子质量 (Aᵣ) 是某元素原子的加权平均质量与碳‑12 质量的 1/12 的比值。相对分子质量 (Mᵣ) 是分子中所有原子 Aᵣ 之和。摩尔质量 (M) 的单位是 g/mol，数值等于 Mᵣ。记法：“Aᵣ 给原子，Mᵣ 给分子，M 把它变克数”。
The key mole‑based calculations are:
Number of moles = mass (g) ÷ molar mass (g/mol)
Number of moles = volume of gas (dm³) ÷ 24 dm³/mol (at r.t.p.)
Concentration (mol/dm³) = moles ÷ volume (dm³)
Memorise the 'mole triangle' for each to rearrange equations quickly.
关键的摩尔计算式：
摩尔数 = 质量 (g) ÷ 摩尔质量 (g/mol)
摩尔数 = 气体体积 (dm³) ÷ 24 dm³/mol（常温常压下）
浓度 (mol/dm³) = 摩尔数 ÷ 体积 (dm³)
记住各个“摩尔三角”，可以快速改写公式。
Empirical formula is the simplest whole‑number ratio of atoms in a compound. Molecular formula is the actual number of atoms. Remember: 'Empirical is the reduced recipe, molecular is the full recipe'.
实验式是化合物中各原子最简整数比。分子式是原子的实际数目。记忆：“实验式是简化配方，分子式是完整配方”。
4. Electrochemistry & Redox | 电化学与氧化还原
Oxidation and reduction always occur together in redox reactions. OIL RIG is the classic memory aid: Oxidation Is Loss of electrons, Reduction Is Gain of electrons. In terms of oxygen, oxidation is gain of oxygen, reduction is loss of oxygen.
氧化和还原在氧化还原反应中总是同时发生。经典记忆口诀 OIL RIG：氧化是失去电子，还原是得到电子。从氧的角度，氧化是得氧，还原是失氧。
An oxidising agent accepts electrons and is itself reduced. A reducing agent donates electrons and is itself oxidised. Think: 'The oxidising agent steals electrons — it gets reduced as punishment'.
氧化剂接受电子，自身被还原。还原剂给出电子，自身被氧化。联想：“氧化剂偷走电子——作为惩罚它自己被还原”。
In electrolysis, cations migrate to the cathode (negative) and gain electrons (reduction). Anions migrate to the anode (positive) and lose electrons (oxidation). Remember: 'Cations go to Cathode, Anions go to Anode — opposites attract'.
在电解过程中，阳离子移向阴极（负极）并得到电子（还原）。阴离子移向阳极（正极）并失去电子（氧化）。记法：“阳离子 (Cation) 去阴极 (Cathode)，阴离子 (Anion) 去阳极 (Anode)——异 性相吸”。
For simple electrolysis of molten compounds, the metal is produced at the cathode and non‑ al series. The lower the position (more reactive metal), the harder to discharge. The half‑equation shows the electron transfer: e.g. Cu²⁺ + 2e⁻ → Cu.
熔融物的简单电解中，金属在阴极生成，非金属在阳极生成。在溶液电解中，放电顺序取决于电化学序。金属越活泼（位置越低），越难放电。半反应式展示电子转移：如 Cu²⁺ + 2e⁻ → Cu。
5. Acids, Bases & Salts | 酸、碱与盐
solution. Strong acids fully ionise (HCl → H⁺ + Cl⁻); weak acids partially ionise (CH₃COOH ⇌ is about how many acid particles per volume, strength is about how much they ionise. Use: 'Concentration = crowd, strength = personality'.
酸是在水溶液中产生氢离子 (H⁺) 的物质。强酸完全电离 (HCl → H⁺ + Cl⁻)；弱酸部分电离 (CH₃COOH ⇌ H⁺ + CH₃COO⁻)。浓度指单位体积里酸微粒的数量，强度指它们电离的程度。联想：“浓度是人数，强度是性格”。
bases, but not all bases are alkalis. Common strong alkalis are NaOH, KOH. The pH scale (0–14) measures H⁺ concentration: pH < 7 acidic, pH = 7 neutral, pH > 7 alkaline.
碱是可以接受 H⁺ 离子从而中和酸的物质。可溶碱（在水里释放 OH⁻）称为 alkali（碱溶液）。所有 alkali 都是碱，但并非所有碱都可溶。常见的强碱有 NaOH、KOH。pH 标度 (0–14) 量度 H⁺ 浓度：pH < 7 为酸性，pH = 7 为中性，pH > 7 为碱性。
n is the technique to find the exact volume of acid and base that neutralise each other. The endpoint is signalled by an indicator like methyl orange or phenolphthalein.
中和反应是酸和碱生成盐和水的反应：H⁺ + OH⁻ → H₂O。滴定法就是精确测定酸与碱刚好中和时所用体积的实验技术。终点通过指示剂（如甲基橙或酚酞）变色来指示。
onate, then filtering and crystallising. Insoluble salts are made by precipitation. Think: 'Soluble = you crystallise, insoluble = you precipitate'.
盐的制备方法取决于其溶解性。可溶盐通常通过酸与过量不溶性碱、金属或碳酸盐反应，然后过滤、结晶得到。不溶盐用沉淀法制备。记忆：“可溶——结晶析出，不溶——沉淀生成”。
6. Rates of Reaction & Equilibria | 反应速率与平衡
ollowing the mass of a reaction mixture, volume of gas produced, or colour change. Recall: 'Rate = how fast stuff disappears or appears'.
反应速率指反应物转变为生成物的快慢程度。可以通过跟踪反应混合物质量、气体产生体积或颜色变化来测量。记住：“速率 = 物质消失或出现的快慢”。
Collision theory states that for a reaction to occur, particles must collide with sufficient energy (activation energy) and correct orientation. Increasing temperature, concentration, pressure (for gases) or surface area increases frequency of successful collisions. A catalyst lowers activation energy, offering an alternative pathway.
碰撞理论指出，要发生反应，微粒必须以足够的能量（活化能）和正确的取向发生碰撞。升高温度、增加浓度、增大气体压强或增大固体表面积，都会增加有效碰撞的频率。催化剂降低活化能，提供替代反应路径。
Reversible reactions reach a dynamic equilibrium when the forward and reverse rates are equal in a closed system. Le Chatelier's principle says if a condition changes, the equilibrium shifts to oppose the change. Mnemonic: 'Le Chatelier's — the system does the opposite of what you do'.
可逆反应在密闭体系中正逆反应速率相等时达到动态平衡。勒夏特列原理指出，条件改变时平衡向减弱该改变的方向移动。口诀：“勒夏特列——系统就跟你对着干”。
To explain a shift: increasing temperature favours the endothermic direction; increasing pressure favours the side with fewer gas moles; adding catalyst does not change position of equilibrium, only speeds up attainment. Essential for the Haber process and Contact process.
解释移动：升高温度有利于吸热方向；增大压强有利于气体分子数较少的一侧；添加催化剂不会移动平衡位置，只加速到达平衡。这对于哈伯法和接触法至关重要。
7. Organic Chemistry Basics | 有机化学基础
Organic chemistry is the study of carbon compounds. A hydrocarbon contains only hydrogen and carbon. Alkanes are saturated hydrocarbons with single C– ds (CₙH₂ₙ₊₂). Alkenes are unsaturated with at least one C=C double bond (CₙH₂ₙ). Remember: 'Alkane = all single bonds, alkene = one double bond'.
有机化学是碳化合物的化学。烃仅含碳和氢。烷烃是饱和烃，只含 C–C 单键（通式 CₙH₂ₙ₊₂）。烯烃是不饱和烃，含至少一个 C=C 双键（通式 CₙH₂ₙ）。记法：“烷 (ane) 全单键，烯 (ene) 有一双”。
A homologous series is a family of organic compounds with the same functional group, same general formula, and gradually changing physical properties. Each successive member differs by a CH₂ unit. The functional group is the reactive part of the molecule that determines the chemistry.
同系物是有相同官能团、相同通式、物理性质呈递变规律的一类有机物。相邻成员相差一个 CH₂ 单元。官能团是分子中决定化学性质的活性部分。
Key reactions: alkanes undergo combustion and substitution (with halogens, UV light). Alkenes undergo addition reactions, turning bromine water from orange to colourless — the test for unsaturation. Hydrogenation adds H₂ across the double bond to make an alkane; hydration adds steam (H₂O) to make an alcohol. A mnemonic: 'Alkenes are addition addicts'.
关键反应：烷烃发生燃烧和取代反应（与卤素需紫外线）。烯烃发生加成反应，可使溴水由橙色变为无色——这是不饱和键的检验。加氢反应把 H₂ 加在双键上变为烷烃；水化反应加蒸汽 (H₂O) 变为醇。顺口溜：“烯烃是加成狂”。
First four alkanes: methane (CH₄), ethane (C₂H₆), propane (C₃H₈), butane (C₄H₁₀). Name using prefix + ane. For alkenes: ethene (C₂H₄), propene (C₃H₆). Naming: longest chain gives root, number indicates position of functional group or branch.
前四个烷烃：甲烷 (CH₄)、乙烷 (C₂H₆)、丙烷 (C₃H₈)、丁烷 (C₄H₁₀)。以“某烷”命名。烯烃：乙烯 (C₂H₄)、丙烯 (C₃H₆)。命名：选最长的碳链为主链，编号标示官能团或支链位置。
8. Experimental Techniques & Apparatus | 实验技术与仪器
Precise vocabulary for apparatus is vital for CIE practical‑based questions. Filtration separates an insoluble solid from a liquid using filter paper and funnel. The liquid that passes through is the filtrate; the solid left is the residue. Distillation separates a liquid from a solution based on boiling points. Simple distillation is for one solvent, fractional distillation for miscible liquids with close boiling points.
准确使用仪器术语对 CIE 实验题至关重要。过滤用滤纸和漏斗分离不溶性固体和液体。透过的液体叫滤液；留下的固体叫残渣。蒸馏根据沸点差异分离液体与溶液。简单蒸馏用于一种溶剂，分馏适用于沸点相近的互溶液体。
ns a pure solid from a saturated solution by evaporating some solvent then cooling. Think: 'Hot saturated, then cool and filter crystals' onary phase. The Rf value = distance moved by substance ÷ distance moved by solvent front.
结晶法通过蒸发部分溶剂再冷却，从饱和溶液中获得纯固体。记法：“热饱和溶液，冷却后过滤得晶体”。色谱法根据组分在流动相中的溶解度和在固定相上的吸附能力不同进行分离。比移值 Rf = 物质移动距离 ÷ 溶剂前沿移动距离。
Titration apparatus includes pipette, burette, conical flask, and indicator. The pipette measures a fixed volume of alkali; the burette delivers acid to find the exact neutralising volume. End‑point is when indicator just changes colour. Repeat titres should be concordant (within 0.1 cm³). The phrase: 'Pipette picks, burette adds, flask swirls'.
滴定仪器包括移液管、滴定管、锥形瓶和指示剂。移液管精确量取一定体积的碱液；滴定管加入酸液以找到恰好中和所需体积。终点是指示剂刚好变色之时。重复滴定所得体积应吻合（相差 ≤ 0.1 cm³）。口诀：“移液管取液，滴定管加液，锥形瓶摇晃”。
Describing observations requires precision: 'colourless solution turns blue', 'effervescence (bubbling) occurs', 'white precipitate forms'. Always mention colour changes and state changes. Use 'precipitate' for solid formed when two solutions mix.
描述观察要精确：“无色溶液变为蓝色”，“有气泡冒出（起泡）”，“生成白色沉淀”。务必提及颜色变化和状态变化。两溶液混合产生固体，必须用“沉淀”一词。
9. Rapid‑Recall Strategies & Terminology Traps | 快速回忆策略与术语陷阱
Many CIE marks are lost through confusing similar‑sounding terms. 'Atom' vs 'molecule' vs 'ion': atom is a single neutral particle (e.g. Ne), molecule is two or more atoms covalently bonded (e.g. O₂, H₂O), ion is a charged particle (e.g. Na⁺, SO₄²⁻). Use the phrase 'Atom alone, molecule mates, ion charges'.
许多 CIE 分数因混淆发音相近的术语而丢失。“原子”是单个中性微粒（如 Ne），“分子”是两个或以上原子通过共价键结合（如 O₂, H₂O），“离子”是带电微粒（如 Na⁺, SO₄²⁻）。记法：“原子独身，分子结伴，离子带电”。
'Melting' and 'dissolving' ent, often reversible but may involve ionic dissociation (NaCl(s) → Na⁺(aq) + Cl⁻(aq)). Thermal decomposition is a chemical breakdown by heat, producing new substances.
“熔化”与“溶解”不同。熔化是固态变为液态的物理变化（冰 → 水），无新物质生成。溶解是固体均匀分散在溶剂中，通常可逆，但可能涉及电离（NaCl(s) → Na⁺(aq) + Cl⁻(aq)）。热分解是受热发生化学分解，生成新物质。
Word roots help decode unfamiliar vocabulary. 'Electro‑' means electricity, 'photo‑' light, 'thermo‑' heat, '‑lysis' splitting, '‑synthesis' itting by electricity; photodecomposition = breakdown using light; thermal cracking = heat‑induced splitting of long‑chain hydrocarbons.
词根帮助拆解生词。“Electro‑” 电，“photo‑” 光，“thermo‑” 热，“‑lysis” 分解，“‑synthesis” 合成。所以 electrolysis = 用电分解；photodecomposition = 光分解；thermal cracking = 热裂解长链烃。
Create your own flashcards with term on one side and bilingual definition plus visual sketch on the other. For processes like fractional distillation, sketch the column and label fractions: 'refinery gases' on top, 'bitumen' at bottom. Recalling the image will anchor the vocabulary.
自制闪卡，一面写术语，另一面写中英双语定义并画出简单示意图。对于分馏等过程，画出分馏塔并标注馏分：顶部“炼厂气”，底部“沥青”。回想图像能牢固锁定词汇。
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