The state of matter at room temperature depends on the specific substance you're asking about.

Room temperature is generally considered to be around 20-25 degrees Celsius (68-77 degrees Fahrenheit).

Here are some common states of matter at room temperature:

* Solid: Many substances are solid at room temperature, such as:

* Metals (iron, gold, copper)

* Rocks (granite, limestone)

* Wood

* Ice (frozen water)

* Liquid: Water is the most common example of a liquid at room temperature. Other examples include:

* Mercury

* Ethanol

* Vegetable oil

* Gas: Some substances are gases at room temperature, such as:

* Oxygen

* Nitrogen

* Carbon dioxide

* Helium

Important Note: The state of matter can change depending on the temperature and pressure. For example, water can be a solid (ice), a liquid (water), or a gas (steam) depending on the temperature.