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@thefaithanimashaun: #lowbuy #target #budgeting

thefaithanimashaun
thefaithanimashaun
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Friday 10 January 2025 19:01:11 GMT
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jz100thprob
jz100thprob :
amazing!
2025-01-10 19:41:54
1
ambennett10
ambennett10 :
👏👏👏 one day I’ll do this!
2025-01-10 19:11:27
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IGCSE Chemistry Acids & Bases for 2025 Exams •Definition of Acids and Bases\*\*: ▪ Acids are proton donors. 🧪 ▪ Bases are proton acceptors. ⚗️ • \*\*Types of Acids\*\*: • Strong Acids: Ionise fully. 💪 • Weak Acids: Ionise partially. 🌊 • \*\*Types of Bases\*\*: • Metal oxides 🏗️ • Metal hydroxides 🧱 • Metal carbonates 🔋 • When bases dissolve in water, they are called alkalis. 💧 • \*\*Neutralisation Reactions\*\*: • Reactions between acids and bases. 🔄 • Usually produce salts. 🧂 • \*\*Methods of Salt Preparation\*\*: 1. \*\*Neutralisation\*\*: ▪ Add excess base to acid until no more dissolves. ➕ ▪ Filter out excess base. 🗑️ ▪ Evaporate filtrate until crystallization. 💨 ▪ Cool filtrate to form salt crystals. ❄️ 2. \*\*Titration\*\*: ▪ React an acid with an alkali using indicators. 🎯 ▪ Indicators and their colors: ◦ Phenolphthalein: Purple in alkali, colorless in acids. 🟣 ◦ Thymolphthalein: Blue in alkali, colorless in acids. 🔵 ◦ Methyl orange: Orange in neutral, yellow in alkali, red in acids. 🟠🟡🔴 3. \*\*Precipitation\*\*: ▪ Mix two aqueous salt solutions. 🌊 ▪ Filter and wash precipitate. 🧼 ▪ Dry between filter papers. 📄 • \*\*Types of Oxides\*\*: • \*\*Acidic Oxides\*\*: Non-metal oxides. 🌋 • \*\*Amphoteric Oxides\*\*: Have properties of both acids and bases. ⚖️ ▪ Examples: Aluminium, zinc, and lead oxides. 🏗️ • \*\*Basic Oxides\*\*: Other metal oxides. 🔵 • \*\*Neutral Oxides\*\*: Do not react with acids or bases. ▪ Examples: Carbon monoxide, nitrogen monoxide, water. 🌫️💧 #igcsechemistry #pastpapers #pdf #notes #paper4 #paepr6 #exam #acidsandbases
IGCSE Chemistry Acids & Bases for 2025 Exams •Definition of Acids and Bases\*\*: ▪ Acids are proton donors. 🧪 ▪ Bases are proton acceptors. ⚗️ • \*\*Types of Acids\*\*: • Strong Acids: Ionise fully. 💪 • Weak Acids: Ionise partially. 🌊 • \*\*Types of Bases\*\*: • Metal oxides 🏗️ • Metal hydroxides 🧱 • Metal carbonates 🔋 • When bases dissolve in water, they are called alkalis. 💧 • \*\*Neutralisation Reactions\*\*: • Reactions between acids and bases. 🔄 • Usually produce salts. 🧂 • \*\*Methods of Salt Preparation\*\*: 1. \*\*Neutralisation\*\*: ▪ Add excess base to acid until no more dissolves. ➕ ▪ Filter out excess base. 🗑️ ▪ Evaporate filtrate until crystallization. 💨 ▪ Cool filtrate to form salt crystals. ❄️ 2. \*\*Titration\*\*: ▪ React an acid with an alkali using indicators. 🎯 ▪ Indicators and their colors: ◦ Phenolphthalein: Purple in alkali, colorless in acids. 🟣 ◦ Thymolphthalein: Blue in alkali, colorless in acids. 🔵 ◦ Methyl orange: Orange in neutral, yellow in alkali, red in acids. 🟠🟡🔴 3. \*\*Precipitation\*\*: ▪ Mix two aqueous salt solutions. 🌊 ▪ Filter and wash precipitate. 🧼 ▪ Dry between filter papers. 📄 • \*\*Types of Oxides\*\*: • \*\*Acidic Oxides\*\*: Non-metal oxides. 🌋 • \*\*Amphoteric Oxides\*\*: Have properties of both acids and bases. ⚖️ ▪ Examples: Aluminium, zinc, and lead oxides. 🏗️ • \*\*Basic Oxides\*\*: Other metal oxides. 🔵 • \*\*Neutral Oxides\*\*: Do not react with acids or bases. ▪ Examples: Carbon monoxide, nitrogen monoxide, water. 🌫️💧 #igcsechemistry #pastpapers #pdf #notes #paper4 #paepr6 #exam #acidsandbases




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