The three states of matter are:

**The reasoning** Matter exists in three fundamental forms based on how tightly its particles are packed and how freely they move: 1. **Solid** – particles are tightly packed, fixed in position (like ice, wood, or stone) 2. **Liquid** – particles are close but can slide past each other (like water, oil) 3. **Gas** – particles are far apart and move freely (like air, steam) This is called the **states of matter** or **phases of matter**. Temperature and pressure can change one state to another (ice melts to water, water boils to steam). **Why the wrong options tempt you** **B (Hot, warm, cold)** – These describe *temperature*, not states of matter. Temperature *affects* states, but it's not a state itself. **C (Big, medium, small)** – These describe *size*, which has nothing to do with how matter is structured. **D (Hard, soft, smooth)** – These are *textures* or properties that materials can have, but not scientific classifications of matter's states. **Quick takeaway** Remember: **states of matter describe HOW particles arrange themselves** (fixed, flowing, or free), not how something feels, its size, or its temperature.