Liquids:
* Water
* Oil
* Mercury
* Milk
* Blood
* Honey
Gases:
* Oxygen
* Nitrogen
* Carbon dioxide
* Helium
* Neon
* Argon
Plasma:
* Lightning
* The Sun
* Fluorescent lights
* Neon signs
Other:
* Light
* Sound
* Heat
* Electromagnetic radiation
Key Properties of Solids:
To understand why these are not solids, it's helpful to remember the key properties of solids:
* Fixed shape: Solids maintain their shape unless an external force is applied.
* Fixed volume: Solids have a definite volume that doesn't easily change.
* High density: Solids are typically denser than liquids and gases.
* Strong intermolecular forces: The particles in solids are held together by strong attractive forces.
Why the above examples are NOT solids:
* Liquids and Gases: They take the shape of their container and have varying volumes.
* Plasma: While it's technically a state of matter, plasma is ionized gas, meaning its particles are not tightly bound together.
* Other: These examples are not states of matter at all; they are forms of energy or phenomena.
