📚 Year 12 CAIE Chemistry: Vocabulary & Terminology Memorisation Guide | 词汇术语速记指南
Mastering key terminology in Year 12 CAIE Chemistry is crucial for understanding concepts, answering exam questions accurately, and scoring high marks. This guide provides effective mnemonics, root-word analysis, and associative tips to help you memorise essential vocabulary across all topics - from atomic structure to organic chemistry and exam command words.
掌握 Year 12 CAIE 化学的关键术语对于理解概念、准确回答考题和取得高分至关重要。本速记指南提供有效的助记法、词根分析和联想技巧，帮助你记住从原子结构到有机化学等所有主题的重要词汇以及考试指令词。
1. Atomic Structure & Electron Configuration | 原子结构与电子排布
Orbital: Think of 'orbital' as 'orbit + all' - it is not a fixed path like a planet's orbit, but a region where the electron might be found anywhere within a probability cloud. The 'al' suggests a general area. An s-orbital is spherical (like a ball), a p-orbital is dumbbell-shaped (imagine two balloons tied together), and d-orbitals have four lobes (like a clover leaf).
轨道 (orbital)：把 'orbital' 看作 'orbit + all'——它不像行星轨道那样有固定路径，而是电子可能出现的概率云区域。'al' 暗示一个大致范围。s 轨道呈球形（像皮球），p 轨道呈哑铃形（想象两个气球绑一起），d 轨道有四瓣（像三叶草）。
Sub-shell: A sub-shell is a 'sub' (below) division of a main shell. The letters s, p, d, f can be recalled by the phrase 'Some Poor Dumb Fellow' or by shapes: s-sharp, p-principal, d-diffuse, f-fundamental.
亚层 (sub-shell)：亚层是主壳层的子 ('sub') 分层。字母 s, p, d, f 可用句子 'Some Poor Dumb Fellow' 记忆，或者根据形状：s 尖锐 (sharp), p 主要 (principal), d 弥散 (diffuse), f 基本 (fundamental)。
Ionisation energy: 'Ionisation' sounds like 'ionising' - removing an electron to form an ion. The energy needed is the ionisation energy. Trend across a period: it increases because of greater nuclear charge and similar shielding. Down a group: it decreases because outer electrons are farther from the nucleus and more shielded.
电离能 (ionisation energy)：'Ionisation' 听起来像 'ionising'（电离）——移走电子形成离子。所需能量即为电离能。周期内递变：由于核电荷增大且屏蔽相当，电离能增大。族内向下：外层电子离核更远且屏蔽更强，电离能减小。
Aufbau principle & Hund's rule: 'Aufbau' is German for 'building up' - electrons fill lowest energy orbitals first. Hund's rule: imagine a bus – passengers prefer empty seats before doubling up; electrons singly occupy degenerate orbitals with parallel spins before pairing.
构造原理与洪特规则：'Aufbau' 在德语中意为“建造”——电子首先填充能量最低的轨道。洪特规则：想象公交车——乘客喜欢先坐空位再拼坐；电子在简并轨道中先自旋平行单独占据，然后再配对。
2. Chemical Bonding & Structure | 化学键与结构
Ionic bonding . Electrostatic attraction between oppositely charged ions (cations and anions). Remember: 'cation' is positive because 'cats have paws' (paws = positive). 'Anion' is negative - 'a negative ion'.
离子键 (ionic bonding)：Ionic = ion + ic。阴阳离子之间的静电吸引。巧记：'cation' 带正电，因为 'cats have paws'（猫有爪，谐音 positive）。'anion' 带负电——'a negative ion'。
Covalent bonding: 'Co-' means sharing, 'valent' refers to valence electrons. Atoms share pairs of electrons. In a dative covalent bond, one atom provides both electrons – think of a 'donation'.
共价键 (covalent bonding)：'co-' 意为共同，'valent' 指价电子。原子共用电子对。在配位共价键中，一个原子提供两个电子——可以想成“捐献”。
Electronegativity: Break it down: 'electro-' (electric charge) + 'negativity' (pulling negative). It is the power of an atom to attract the bonding pair of electrons in a covalent bond. Remember the trend: F is the most electronegative; across a period it increases, down a group it decreases.
电负性 (electronegativity)：拆解：'electro-'（电荷）+ 'negativity'（拉负电）。原子在共价键中吸引键合电子对的能力。记住趋势：氟电负性最大；同周期向右增大，同族向下减小。
Metallic bonding & lattice: Metallic comes from 'metal'; the bonding is from attraction between a lattice of positive metal ions and a 'sea' of delocalised electrons. 'Delocalised' means the electrons are not stuck to one atom – de- (away) + localised.
金属键与晶格：Metallic 源自 'metal'；键合来自正金属离子晶格与离域电子“海”之间的吸引。'delocalised' 意思是电子不局束于某一原子——de-（离开）+ localised（局域）。
3. Stoichiometry & the Mole | 化学计量与摩尔
Mole & Avogadro's constant: A mole is a 'pile' of particles, like a dozen but much larger. Avogadro' ed by picturing an avocado with exponentials. It is the number of atoms in exactly 12 g of carbon-12.
摩尔与阿伏伽德罗常数：摩尔是一“堆”粒子，就像一打，但大得多。阿伏伽德罗数 (6.02 × 10²³) 可以联想一个带有指数的牛油果。它是恰好 12 g 碳-12 中的原子数。
Empirical vs molecular formula: 'Empirical' relates to experiment - the simplest whole number ratio from experimental data. 'Molecular' is the actual number of atoms in a molecule. For example, glucose: molecular formula C₆H₁₂O₆, empirical formula CH₂O.
经验式与分子式：'empirical' 与实验相关——来自实验数据的最简整数比。'molecular' 是分子中原子的实际数目。例如葡萄糖：分子式 C₆H₁₂O₆，经验式 CH₂O。
Limiting reagent & theoretical yield: The limiting reagent is the reactant that runs out first and thus 'limits' the product formed. Think of making sandwiches: you need 2 slices of bread and 1 slice of cheese per sandwich; if you have 10 slices of bread and 3 slices of cheese, cheese is the limiting reagent. Theoretical yield is the maximum product calculated from the limiting reagent.
限制试剂与理论产率：限制试剂是最先消耗完的反应物，因此“限制”了产物的生成。想象做三明治：每份需要 2 片面包和 1 片奶酪；若有 10 片面包和 3 片奶酪，奶酪就是限制试剂。理论产率是由限制试剂计算出的最大产量。
4. Energetics | 能量学
Enthalpy H and ΔH: Enthalpy is a measure of heat content at constant pressure. 'Enthalpy' sounds like 'in-thalpy' rnal heat. ΔH negative = exothermic (heat exits); ΔH positive = endothermic (heat enters).
焓 H 与 ΔH：焓是在恒压下热含量的量度。'Enthalpy' 听起来像 'in-thalpy' ——内在热量。ΔH 为负 = 放热反应（热量放出）；ΔH 为正 = 吸热反应（热量进入）。
Exothermic & endothermic: 'Exo-' means 'outside' (like exit), 'thermic' means heat. Energy is released to the surroundings. 'Endo-' means 'inside' (like enter), so energy is absorbed from the surroundings.
放热与吸热：'exo-' 意为“向外”（如 exit），'thermic' 指热。能量释放到环境中。'endo-' 意为“向内”（如 enter），所以从环境吸收能量。
Activation energy: The minimum energy that colliding particles must have for a reaction to occur. Picture a hill: the activation energy is the height you must climb before rolling down.
活化能 (activation energy)：碰撞粒子必须拥有的能引发反应的最小能量。想象一座小山：活化能就是滚落之前必须爬过的高度。
Hess's law: The enthalpy change for a reaction is independent of the route taken. Remember 'Hess' like 'mess' - no matter how messy the path, the total ΔH is the same.
赫斯定律：反应的焓变与所采取的路径无关。把 'Hess' 想象成 'mess'（乱）——无论路径多乱，总 ΔH 都一样。
5. Rates of Reaction | 反应速率
Rate
Published by TutorHao | Year 12 Chemistry Revision Series | aleveler.com 更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图