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化學粒子與物質補習
朗林化學 — 香港最專業的 HKDSE Chemistry 粒子與物質專科補習
粒子理論（Kinetic Particle Theory）是 HKDSE Chemistry 的核心基礎。朗林化學專注於粒子運動、物質三態變化、原子結構及分子間作用力等關鍵課題，幫助學生建立清晰的微觀概念，提升 DSE 化學 Paper 1 及 Paper 2 表現。
最新 Google 搜尋優化重點
我們內容嚴格符合 E-E-A-T 原則，由資深化學導師親自編寫，確保學生獲得最準確及實戰性的知識。
5 條經典練習題（附詳細題解）
Explain why the rate of diffusion of bromine gas is faster than that of bromine liquid at room temperature. (3 marks)
Bromine gas particles have higher kinetic energy and move faster than in liquid state. There are larger spaces between gas particles, allowing faster diffusion. In liquid, particles are closely packed with stronger intermolecular forces.
Describe the arrangement and movement of particles in a solid, liquid and gas. (4 marks)
Solid: particles vibrate about fixed positions, closely packed. Liquid: particles slide past each other, still close together. Gas: particles move freely and rapidly in random motion with large spaces between them.
An element has electronic configuration 2,8,3. State the group and period it belongs to in the Periodic Table. (2 marks)
Group 3 (3 valence electrons), Period 3 (3 occupied electron shells).
Why does evaporation cause cooling? Use the kinetic particle theory in your answer. (3 marks)
Only particles with higher kinetic energy can escape the liquid surface. The remaining particles have lower average kinetic energy, thus lowering the temperature of the liquid.
Explain why ionic compounds have higher melting points than simple molecular substances. (3 marks)
Ionic compounds have strong electrostatic forces between oppositely charged ions throughout the giant lattice structure, requiring more energy to break. Simple molecular substances only have weak van der Waals’ forces between molecules.
#化學粒子理論
#KineticParticleTheory
#化學補習
#DSEChem2025
English Version
Lang Lam Chemistry specializes in HKDSE Chemistry tutoring focusing on Particles and Matter. Our expert teachers help students master Kinetic Particle Theory, States of Matter, Atomic Structure, and Intermolecular Forces with clear explanations and exam-focused practice.
朗林化學 — 學生佳績與中心特色
學生成績與評語
“Ron Sir 的粒子理論講解非常清晰，讓我由4分進步到5**。”
“Brian Sir 的題解技巧幫助我 Paper 2 大幅提升。”
“小班教學 + 即時提問，學習效率很高。”
補習社特點
- 真人小班教學（最多8人）
- Zoom + 面授同步
- 專注 HKDSE 化學
- 定期 mock exam + 詳細講解
老師介紹
10年以上教學經驗，專長原子結構及粒子理論，多次獲學生評為「最清晰講解老師」。
前中學化學科主任，擅長考試技巧及 Paper 2 應試策略，幫助無數學生突破5*。
4大地點
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