📚 Remedial Chemistry - Unit 3: Physical States of Matter Part 1 (CALII Academy)

1️⃣ Understanding Matter

3.1 Introduction

🔹 Matter ➡️ Anything that occupies space & has mass
🔹 Exists in three main states:
🌬️ Gas ➡️ (e.g., Steam) No fixed shape or volume
💧 Liquid ➡️ (e.g., Water) Fixed volume, takes container’s shape
❄️ Solid ➡️ (e.g., Ice) Fixed shape & volume
🔹 Plasma ⚡ (4th state) ➡️ Ionized gas (e.g., ☀️ Sun, ⚡ Lightning, 🌟 Stars)
🔹 Changes in 🌡️ temperature & ⚖️ pressure affect states of matter


2️⃣ Kinetic Theory of Matter

🌀 Explains differences between solid, liquid & gas based on particle motion
✅ Particles always move & have kinetic energy ⚡
✅ Higher temperature 🔥 ➡️ Faster particle motion
✅ States differ due to energy & motion of particles


3️⃣ Properties of Matter

✅ Gases 🌬️
➡️ No fixed shape & volume
➡️ Easily compressed 🔻
➡️ Low density 🪶
➡️ Exert pressure in all directions ↔️⬆️⬇️
➡️ Flow & diffuse easily 🌫️

✅ Liquids 💧
➡️ Fixed volume 📏, no fixed shape
➡️ Higher density than gases 📦
➡️ Slightly compressible 🔄
➡️ Flow easily (fluids) 🔄

✅ Solids ❄️
➡️ Fixed shape & volume 📏
➡️ Highest density 🔵⚫
➡️ Difficult to compress ❌🔄
➡️ Do not flow 🚫🔄

💡 Key Takeaway: Matter behaves differently based on particle motion & energy! ⚡🔥

Join for More