Well now, that would depend on what kind of matter you're talking about, wouldn't it.
At room temperature (and room pressure) . . .
-- Oxygen, nitrogen, and helium are in the gas phase.
-- Water, Mercury, and grain alcohol are in the liquid phase.
-- Iron, sugar, and candle wax are in the solid phase.
solid
It is a gas.
Silicon is a solid at room temperature.
At room temperature, Calcium is a soft grey solid.
At normal (room) temperature gold is in solid state of matter (phase).
Platinum's state of matter at room temperature would be a solid.
Gas at room temperature
Carbon at room temperature is solid.
Neptunium is a solid metal at room temperature.
Gas at room temp!
just like you
It is a gas.
It is a solid.
Silicon is a solid at room temperature.
solid...
Calcium is a solid at room temperature. (See the CRC Handbook of Chemistry and Physics for physical properties.)
At room temperature, Calcium is a soft grey solid.
At normal (room) temperature gold is in solid state of matter (phase).