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🧪 State of Matter at Room Temperature Quiz

Can you guess whether a substance is a solid, liquid, or gas at room temperature? Let's find out!

Welcome to the States of Matter Quiz!

Test your knowledge of chemistry by identifying whether substances are solids, liquids, or gases at room temperature (25°C).

Configure your quiz using the options on the left and click "Start Quiz" when you're ready!

Solids retain a fixed shape and volume. Most metals and ionic compounds are solid at room temperature. The particles in a solid are tightly packed together in a regular pattern and vibrate in place.

Liquids flow and take the shape of their container while maintaining a nearly constant volume. Only a few elements like mercury and bromine are liquid at room temp. The particles in a liquid are close together but can move past one another.

Gases have neither fixed volume nor shape and will expand to fill their container. Elements like oxygen, nitrogen, and noble gases exist as gases at room temperature. The particles in a gas are far apart and move freely at high speeds.

Common Substances at Room Temperature

Substance State at 25°C Notes
Oxygen (O₂) Gas Diatomic molecule, essential to life
Water (H₂O) Liquid Unique for being liquid at room temp
Iron (Fe) Solid Typical metal
Mercury (Hg) Liquid Only metal that's a liquid at 25°C
Nitrogen (N₂) Gas 78% of Earth's atmosphere
Sodium (Na) Solid Reactive alkali metal
Bromine (Br₂) Liquid Halogen that's a dark red liquid