Chemistry | STEM | Grade 11 | First Term | Seniors 28

🧪 CH.2.01 — Water Purification & Analysis Learn how impure water is treated and made safe to drink, including filtration, distillation, chlorination, reverse osmosis, and electrodialysis. You’ll also learn how to measure and calculate the concentration of dissolved substances using different methods such as ppm, molarity, molality, and TDS. You’ll be able to: analyze water quality, interpret results, and choose the best purification method for a given situation. 💧 CH.2.02 — Water as a Solvent & Water Pollution Explore why water is such a good solvent and what naturally dissolves in it. You’ll investigate how different dissolved substances affect water's pH, conductivity, density, boiling/freezing points, and osmotic pressure. You’ll also understand where water pollutants come from, how they affect ecosystems, and why some dissolved substances are beneficial while others are harmful. Real-life connection: Why does antifreeze help a car radiator work safely in extreme temperatures? 🚗❄️🔥

### 🧪 CH.2.03 — Acids, Bases & Salts Explore the properties of **acids, bases, and salts**, and understand how their strength, structure, and concentration affect their behavior. You’ll practice **pH calculations, acid–base reactions, titration, and salt preparation**. **You’ll be able to:** solve acid–base problems, predict reaction products, and choose the right method to prepare and purify different salts. --- ### ⚡ CH.2.04 — Rate of Chemical Reactions Discover **why some reactions happen faster than others** and how concentration, temperature, pressure, surface area, and other factors affect reaction rates. You’ll learn to connect these factors to **particle collisions** and use experimental data to determine reaction rates. **Real-life connection:** Why does food spoil faster on a hot day? 🍕🔥 --- ### 🚀 CH.2.05 — Catalysts & Activation Energy Understand how **catalysts speed up chemical reactions** by lowering activation energy, including the roles of transition metals, nanoparticles, and biological enzymes. You’ll learn how to **analyze experimental data and design investigations** to study what affects reaction rates. **Real-life connection:** How do catalysts make important chemical processes faster and more efficient? 🔬⚡

### ⚖️ CH.2.06 — Chemical Equilibrium Understand how **reversible reactions reach dynamic equilibrium** and how systems respond when conditions change. You’ll learn **Le Châtelier’s Principle, equilibrium constants (Kc & Kp), and equilibrium calculations**, then apply them to real industrial processes like the **Haber and Contact processes**. **Real-life connection:** How can we control a chemical reaction to get more of the product we want? 🔬⚖️ --- ### 🧪 CH.2.07 — Ionic Equilibrium, Buffers & Solubility Dive deeper into **weak and strong acids and bases**, and understand how **Ka, pKa, Kw, Ksp, and the common-ion effect** help us predict chemical behavior. You’ll practice **pH calculations, titrations, buffer calculations, and solubility equilibria**. **Real-life connection:** How do buffers keep pH stable, and why is pH so important in water treatment? 💧🧪