@shahsfa: Assalamualaikum... 🤭😂😂😂

SHAH SFA
SHAH SFA
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Saturday 16 December 2023 08:25:54 GMT
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dimas863169
🌹💔DIMAS💔🌹 :
waalaikum salam wr wbth slmt mlm .dimas hadir shah...betul betull sekali 🤝🙋😊🤗🙏
2023-12-16 12:56:08
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giesrikandigiesri
giesrikandigiesri :
hhaaa...mau taula
2024-02-28 11:47:07
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aniwahi
aniwahid@81💚 :
betul sesangat shah...😂😂😂
2024-02-20 13:49:12
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riaatan
Ria :
fhm2lah apa lgi klu sdh nenek2😆
2024-02-19 08:33:25
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ude.zalifah
ZALIFAH SULAIMAN :
😂😂😂😂
2024-02-18 02:13:59
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desmaeati6
❤️Desma 龙虎6♥️ :
😅😅😅
2024-02-18 01:33:17
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rianah3092
Arianah♥ :
Sya selalu MCM tu, last2 guna getah ikat sayur
2024-02-09 13:59:00
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isgone81
gone✌️🤞🫰 :
😅😅😅
2024-01-26 21:09:45
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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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