📚 Year 8 OCR Science: Vocabulary & Terminology Quick Memorisation Guide | 八年级 OCR 科学：词汇术语速记指南
Welcome to your fast-track vocabulary guide for Year 8 OCR Science. Mastering scientific terminology early unlocks deeper understanding in biology, chemistry and physics. This guide pairs essential terms with clever memory hooks so you can recall them quickly and accurately during classwork, homework and assessments.
欢迎使用八年级 OCR 科学词汇速记指南。尽早掌握科学术语能帮你更深入地理解生物、化学和物理概念。本指南将核心术语与巧妙的记忆窍门配对，让你在课堂、作业和评估中快速准确地回忆起来。
1. Why Science Vocabulary Matters | 科学词汇为何重要
Every scientific subject has its own language. Words like ‘photosynthesis’, ‘neutralisation’ or ‘velocity’ encode precise meanings. If you treat these terms as passwords that unlock exam questions, you stop feeling overwhelmed. Building a strong vocabulary also helps you write detailed explanations and follow practical instructions confidently.
每个科学学科都有自己的语言。“光合作用”“中和”或“速度”这些词都编码了精确的含义。如果你把这些术语看作解锁考题的密码，就不会再感到不知所措。积累丰富的词汇还能帮助你写出详细的解释，并自信地遵循实验操作步骤。
2. Mastering Prefixes and Suffixes | 掌握前缀与后缀
Many science words are built from Greek or Latin roots. Learning common prefixes and suffixes turns intimidating long words into puzzles you can solve. This table gives you a head start.
许多科学词汇由希腊或拉丁词根构成。学习常见的前缀和后缀，能把令人生畏的长词变成可以破解的谜题。下面的表格为你提供一个好的开端。
| Prefix/Suffix | Meaning | Example |
|---|---|---|
| bio- | life | biology, biosphere |
| photo- | light | photosynthesis, photon |
| hydro- | water | hydrochloric acid, dehydration |
| therm- | heat | thermal, endothermic |
| micro- | small | microscope, microorganism |
| -ology | study of | biology, geology |
| -meter | measure | thermometer, barometer |
Try breaking down any new word you encounter. For instance, ‘photosynthesis’ splits into photo- (light) and synthesis (putting together) – plants use light to build glucose. Once you recognise these chunks, spelling and meaning stick naturally.
尝试拆解你遇到的任何新词。例如，“photosynthesis”可拆分为 photo-（光）和 synthesis（合成）——植物利用光来合成葡萄糖。一旦你能认出这些词块，拼写和含义就会自然记住。
3. Biology Essentials: Cells and Life Processes | 生物关键：细胞与生命过程
Cells are the fundamental units of life. Year 8 OCR Biology expects you to name organelles and explain their jobs. Use vivid mental pictures to lock these terms into long-term memory.
细胞是生命的基本单位。八年级 OCR 生物学要求你能够说出细胞器的名称并解释其功能。用生动的心理图像将这些术语锁定到长期记忆中。
Cell (细胞) – the smallest structural and functional unit of an organism. Imagine a tiny factory or a self-contained room (from Latin ‘cella’, meaning small room).
细胞 – 生物体的最小结构和功能单位。想象一家微型工厂或一个独立的小房间（源自拉丁语 ‘cella’，意为小房间）。
Nucleus (细胞核) – the control centre that contains genetic material (DNA). Think of it as the head office giving instructions.
细胞核 – 包含遗传物质（DNA）的控制中心。把它想象成发出指令的总部。
Cytoplasm (细胞质) – a jelly-like substance where chemical reactions occur. Picture a factory floor where workers (enzymes) move around.
细胞质 – 发生化学反应的胶状物质。想象一个工人在其中移动的厂房地面。
Cell membrane (细胞膜) – a selective barrier that controls what enters and exits. Picture a bouncer at a club door, deciding who gets in.
细胞膜 – 控制物质进出的选择性屏障。想象夜店门口的保安，决定谁可以进入。
Mitochondria (线粒体) – the site of aerobic respiration, releasing energy. Remember ‘mighty mitochondria’ – they are the powerhouses. Plural of mitochondrion.
线粒体 – 有氧呼吸的场所，释放能量。记住“强大的线粒体”——它们是细胞的发电站。单数是 mitochondrion。
Chloroplast (叶绿体) – contains chlorophyll for photosynthesis; found only in plant cells. Think ‘chloro-‘ green and ‘plast’ body – the green part that makes food.
叶绿体 – 含有用于光合作用的叶绿素；仅存在于植物细胞中。联想“chloro-”绿色和“plast”体——是制造食物的绿色部分。
4. Biology: Body Systems and Life Processes | 生物：身体系统与生命过程
Organisation is a key theme. Cells build tissues, tissues form organs, organs work in systems. Here are the terms you need, along with equations for respiration and photosynthesis.
组织化是一个关键主题。细胞构成组织，组织形成器官，器官在系统中协同工作。以下是你需要掌握的术语，以及呼吸作用和光合作用的方程式。
Tissue (组织) – a group of similar cells working together, e.g. muscle tissue. Think of a team of identical workers.
组织 – 一群相似的细胞协同工作，例如肌肉组织。想象一支完全由相同的工人组成的队伍。
Organ (器官) – a structure made of different tissues performing a specific function, e.g. the heart. Picture a department with specialised sections.
器官 – 由不同组织构成、执行特定功能的结构，例如心脏。想象一个设有专门科室的部门。
Organ system (器官系统) – a group of organs working together, e.g. the digestive system. Like a whole corporation delivering a service.
器官系统 – 一组器官协同工作，例如消化系统。就像一家提供服务的完整企业。
Aerobic respiration (有氧呼吸) – the process that releases energy from glucose using oxygen. The word equation is: glucose + oxygen → carbon dioxide + water (+ energy). The balanced symbol equation is:
有氧呼吸 – 利用氧气从葡萄糖中释放能量的过程。文字方程式为：葡萄糖 + 氧气 → 二氧化碳 + 水（+ 能量）。平衡的符号方程式如下：
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O (+ energy)
Photosynthesis (光合作用) – the process where plants make glucose using light energy. Remember: carbon dioxide and water are the raw materials. The balanced symbol equation is the reverse of respiration:
光合作用 – 植物利用光能制造葡萄糖的过程。记住：二氧化碳和水是原料。平衡的符号方程式正好与呼吸作用相反：
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
5. Chemistry: Particles, Elements and Compounds | 化学：微粒、元素与化合物
Everything around you is made from about 100 types of atoms – the elements. Understanding basic particle vocabulary helps you visualise the invisible.
你周围的一切都由大约 100 种原子构成——也就是元素。理解基本的粒子词汇，能帮助你想象看不见的世界。
Atom (原子) – the smallest particle of an element that can take part in a chemical reaction. Picture a tiny marble made of a nucleus and electrons.
原子 – 能参与化学反应的元素最小粒子。想象一个由原子核和电子构成的微小弹珠。
Element (元素) – a substance made of only one type of atom, e.g. oxygen (O₂), iron (Fe). Think of a pure Lego brick colour.
元素 – 仅由一种原子组成的物质，例如氧气（O₂）、铁（Fe）。想象只有一种颜色的纯乐高积木。
Molecule (分子) – two or more atoms chemically bonded together, e.g. H₂O, CO₂. Not all molecules are compounds; O₂ is a molecule of an element.
分子 – 两个或多个原子通过化学键结合在一起的粒子，例如 H₂O、CO₂。并非所有分子都是化合物；O₂ 是单质分子。
Compound (化合物) – a substance made of two or more different elements chemically joined, e.g. NaCl (sodium chloride). Always in a fixed ratio.
化合物 – 由两种或多种不同元素通过化学键结合而成的物质，例如 NaCl（氯化钠）。总是具有固定的比例。
Mixture (混合物) – two or more substances not chemically joined, e.g. air, salt water. Remember it is easy to separate them physically.
混合物 – 两种或多种没有通过化学键结合的物质，例如空气、盐水。记住它们可以通过物理方法轻易分离。
Proton, Neutron, Electron (质子、中子、电子) – subatomic particles. Proton positive, electron negative, neutron neutral. ‘Pro’ means for (positive), ‘neutr’ means neutral. Electrons orbit the nucleus.
质子、中子、电子 – 亚原子粒子。质子带正电，电子带负电，中子不带电。“质子”可联想为正面（positive）的支持者，“中子”是中立的，电子则是带负电的绕行者。
6. Chemistry: Reactions, Acids and Alkalis | 化学：反应、酸与碱
Chemical reactions make new substances. Year 8 introduces acids, alkalis and the pH scale. Use everyday examples to memorise these terms.
化学反应能产生新物质。八年级引入了酸、碱和 pH 标度。用日常生活中的例子来记忆这些术语。
Reactant (反应物) – the starting substances in a chemical reaction. Think of ingredients before cooking.
反应物 – 化学反应中的起始物质。想象烹饪前的配料。
Product (生成物) – the substances formed in a chemical reaction. The final dish on your plate.
生成物 – 化学反应中生成的物质。就像你盘中的最终菜肴。
Acid (酸) – a substance with a pH less than 7, often sour, e.g. lemon juice (citric acid). Many lab acids start with ‘hydro-‘ like hydrochloric acid.
酸 – pH 值小于 7 的物质，通常有酸味，例如柠檬汁（柠檬酸）。许多实验室中的酸以“氢”开头，如盐酸（hydrochloric acid）。
Alkali (碱) – a soluble base with a pH greater than 7, feels soapy, e.g. sodium hydroxide. Alkalis are the chemical opposites of acids.
碱 – pH 值大于 7 的可溶性碱，触感滑腻，例如氢氧化钠。碱是酸的化学对立体
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