# Water above 100°C

#### You:
can water be over 100 degrees celsius

#### ChatGPT:
Yes—**water can be over 100 °C**, but it depends on the conditions.

### 🌡️ When water *can* be over 100 °C

- **Under pressure:**\
  At normal atmospheric pressure (1 atm), water boils at 100 °C.\
  If the pressure is higher, the boiling point increases.
  - Example: In a **pressure cooker**, liquid water can reach **120 °C or more** without boiling.
  - Deep in the ocean or in industrial systems, water can stay liquid well above 100 °C.

- **Superheated water:**\
  Very pure water, in a very smooth container, can sometimes be heated **slightly above 100 °C** without boiling. This is unstable and can suddenly boil violently if disturbed.

### ❌ When it *cannot* be over 100 °C

- **At normal atmospheric pressure, once boiling starts**, liquid water stays at **100 °C**.\
  Any added heat goes into turning water into steam, not raising the temperature.

### 💨 What about steam?

- **Steam (water vapor)** can be **much hotter than 100 °C** (called *superheated steam*), especially in engines or power plants.

**In short:**

- Liquid water: over 100 °C ✔️ (with higher pressure)
- Liquid water at normal pressure: over 100 °C ❌
- Steam: over 100 °C ✔️

If you want, I can explain this with a simple diagram or real-life examples.
